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Posted: 12/7/2025 10:29:56 AM EDT
[Last Edit: ELittlefield][Edited]
 A Smaller Flux Raider: The 365UL https://fluxdefense.com/shop/raider-365-ultralight?attribute_color=BLACK&attribute_holster=Black+%28Included+%2B+%240.00%29 Hi guys, I'm very interested in the 365 PDW concept. I currently own a P365 X Macro, with the barrel a bit shorter than the slide, and cutouts in the slide to act as a compensator, and a mag well for 17 round X Macro magazines. Will my slide, barrel, and serial numbered FCU drop into this braced chassis? I'm a little unclear whether this is only made to work with the slimmer original P365, and I'm unsure what my slide is called in Sig's nomenclature.  " />Thanks guys! |
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Originally Posted By ELittlefield: Will my slide, barrel, and serial numbered FCU drop into this braced chassis? I'm a little unclear whether this is only made to work with the slimmer original P365, and I'm unsure what my slide is called in Sig's nomenclature. EDIT: Actually, according to the website your slide won't work: https://fluxdefense.com/shop/raider-365-ultralight Important Compatibility Notes: Do not use short (standard) P365 slides. Recommended slides: P365XL, TACOPS or P365 FUSE. Works with 17, 21, 25 round P365 magazines. Not compatible with 12–15 round magazines. Suppressor Clearance – Designed with ample space to accommodate most common pistol suppressors without interference Original aluminum R365 holster and magwells are not compatible with the Ultralight. |
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Originally Posted By dmk0210: There is no difference in the FCUs except for those with an external thumb safety and those with no thumb safety. That's the whole point of the modular FCU. One "gun / FCU", many different configurations. I'm not sure about the slide. It should work, but may be a bit short and look weird. You should probably get a long FUSE slide and barrel for a PDW. There are also some aftermarket long 6" barrels made for PDW use. Originally Posted By dmk0210: Originally Posted By ELittlefield: Will my slide, barrel, and serial numbered FCU drop into this braced chassis? I'm a little unclear whether this is only made to work with the slimmer original P365, and I'm unsure what my slide is called in Sig's nomenclature. I'm not sure about the slide. It should work, but may be a bit short and look weird. You should probably get a long FUSE slide and barrel for a PDW. There are also some aftermarket long 6" barrels made for PDW use. Understood, thank you. My plan is to get a threaded barrel and suppress it with my Rugged Obsidian 45, in short configuration. Will my 17 round magazines work in this? |
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Originally Posted By ELittlefield: Understood, thank you. My plan is to get a threaded barrel and suppress it with my Rugged Obsidian 45, in short configuration. Will my 17 round magazines work in this? Originally Posted By ELittlefield: Originally Posted By dmk0210: Originally Posted By ELittlefield: Will my slide, barrel, and serial numbered FCU drop into this braced chassis? I'm a little unclear whether this is only made to work with the slimmer original P365, and I'm unsure what my slide is called in Sig's nomenclature. I'm not sure about the slide. It should work, but may be a bit short and look weird. You should probably get a long FUSE slide and barrel for a PDW. There are also some aftermarket long 6" barrels made for PDW use. Understood, thank you. My plan is to get a threaded barrel and suppress it with my Rugged Obsidian 45, in short configuration. Will my 17 round magazines work in this? 17, yes. True Precision is what you want for the barrel. https://true-precision.com/pre-order-extended-sig-sauer-p365-threaded-barrel-for-6-5-chassis-systems/ If you are going to run a suppressor you need to get the recoil spring tuning kit (these barrels are significantly longer than the slides). Some people have reported destroying the barrel running it supressed hard. |
"My friend, you would not tell with such high zest
To children ardent for some desperate glory,
The old Lie: Dulce et decorum est
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Originally Posted By Bye_Felicia: 17, yes. True Precision is what you want for the barrel. https://true-precision.com/pre-order-extended-sig-sauer-p365-threaded-barrel-for-6-5-chassis-systems/ If you are going to run a suppressor you need to get the recoil spring tuning kit (these barrels are significantly longer than the slides). Some people have reported destroying the barrel running it supressed hard. Originally Posted By Bye_Felicia: Originally Posted By ELittlefield: Originally Posted By dmk0210: Originally Posted By ELittlefield: Will my slide, barrel, and serial numbered FCU drop into this braced chassis? I'm a little unclear whether this is only made to work with the slimmer original P365, and I'm unsure what my slide is called in Sig's nomenclature. I'm not sure about the slide. It should work, but may be a bit short and look weird. You should probably get a long FUSE slide and barrel for a PDW. There are also some aftermarket long 6" barrels made for PDW use. Understood, thank you. My plan is to get a threaded barrel and suppress it with my Rugged Obsidian 45, in short configuration. Will my 17 round magazines work in this? 17, yes. True Precision is what you want for the barrel. https://true-precision.com/pre-order-extended-sig-sauer-p365-threaded-barrel-for-6-5-chassis-systems/ If you are going to run a suppressor you need to get the recoil spring tuning kit (these barrels are significantly longer than the slides). Some people have reported destroying the barrel running it supressed hard. I see. This may not be quite as easy as I was imagining. Thanks! |
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XL 365 Barrel vs the True Precision Barrel she told you not to worry about. Attached File True Precision installed in an Aluminum Raider; Attached File |
"My friend, you would not tell with such high zest
To children ardent for some desperate glory,
The old Lie: Dulce et decorum est
Pro patria mori." -Wilfred Owen
To children ardent for some desperate glory,
The old Lie: Dulce et decorum est
Pro patria mori." -Wilfred Owen
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Originally Posted By ELittlefield: I see. This may not be quite as easy as I was imagining. Thanks! Originally Posted By ELittlefield: Originally Posted By Bye_Felicia: Originally Posted By ELittlefield: Originally Posted By dmk0210: Originally Posted By ELittlefield: Will my slide, barrel, and serial numbered FCU drop into this braced chassis? I'm a little unclear whether this is only made to work with the slimmer original P365, and I'm unsure what my slide is called in Sig's nomenclature. I'm not sure about the slide. It should work, but may be a bit short and look weird. You should probably get a long FUSE slide and barrel for a PDW. There are also some aftermarket long 6" barrels made for PDW use. Understood, thank you. My plan is to get a threaded barrel and suppress it with my Rugged Obsidian 45, in short configuration. Will my 17 round magazines work in this? 17, yes. True Precision is what you want for the barrel. https://true-precision.com/pre-order-extended-sig-sauer-p365-threaded-barrel-for-6-5-chassis-systems/ If you are going to run a suppressor you need to get the recoil spring tuning kit (these barrels are significantly longer than the slides). Some people have reported destroying the barrel running it supressed hard. I see. This may not be quite as easy as I was imagining. Thanks! I haven't tried running mine suppressed yet, but I'm likely going with just a micro comp. I have the larger 320 flux setup with a suppressor and its not bad; but with the suppressor it doesn't seem as worth it when compared to something like my MP5-RS that I can use a trilug on. |
"My friend, you would not tell with such high zest
To children ardent for some desperate glory,
The old Lie: Dulce et decorum est
Pro patria mori." -Wilfred Owen
To children ardent for some desperate glory,
The old Lie: Dulce et decorum est
Pro patria mori." -Wilfred Owen
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Originally Posted By ELittlefield:  https://www.youtube.com/watch?v=RPmjbEdcUZYhttps://fluxdefense.com/shop/raider-365-ultralight?attribute_color=BLACK&attribute_holster=Black+%28Included+%2B+%240.00%29 Hi guys, I'm very interested in the 365 PDW concept. I currently own a P365 X Macro, with the barrel a bit shorter than the slide, and cutouts in the slide to act as a compensator, and a mag well for 17 round X Macro magazines. Will my slide, barrel, and serial numbered FCU drop into this braced chassis? I'm a little unclear whether this is only made to work with the slimmer original P365, and I'm unsure what my slide is called in Sig's nomenclature. https://i.imgur.com/CI6zkHQ.jpeg" target="_blank">https://i.imgur.com/CI6zkHQ.jpeg Thanks guys! Just noticed you have the comp version. If it's like the 320 comp you need to verify it'll work with a longer barrel. My Legion 320 Flux I swapped the slide out because the integrated comp prevented you from using a longer barrel. |
"My friend, you would not tell with such high zest
To children ardent for some desperate glory,
The old Lie: Dulce et decorum est
Pro patria mori." -Wilfred Owen
To children ardent for some desperate glory,
The old Lie: Dulce et decorum est
Pro patria mori." -Wilfred Owen
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Originally Posted By Bye_Felicia: I haven't tried running mine suppressed yet, but I'm likely going with just a micro comp. I have the larger 320 flux setup with a suppressor and its not bad; but with the suppressor it doesn't seem as worth it when compared to something like my MP5-RS that I can use a trilug on. Originally Posted By Bye_Felicia: Originally Posted By ELittlefield: Originally Posted By Bye_Felicia: Originally Posted By ELittlefield: Originally Posted By dmk0210: Originally Posted By ELittlefield: Will my slide, barrel, and serial numbered FCU drop into this braced chassis? I'm a little unclear whether this is only made to work with the slimmer original P365, and I'm unsure what my slide is called in Sig's nomenclature. I'm not sure about the slide. It should work, but may be a bit short and look weird. You should probably get a long FUSE slide and barrel for a PDW. There are also some aftermarket long 6" barrels made for PDW use. Understood, thank you. My plan is to get a threaded barrel and suppress it with my Rugged Obsidian 45, in short configuration. Will my 17 round magazines work in this? 17, yes. True Precision is what you want for the barrel. https://true-precision.com/pre-order-extended-sig-sauer-p365-threaded-barrel-for-6-5-chassis-systems/ If you are going to run a suppressor you need to get the recoil spring tuning kit (these barrels are significantly longer than the slides). Some people have reported destroying the barrel running it supressed hard. I see. This may not be quite as easy as I was imagining. Thanks! I haven't tried running mine suppressed yet, but I'm likely going with just a micro comp. I have the larger 320 flux setup with a suppressor and its not bad; but with the suppressor it doesn't seem as worth it when compared to something like my MP5-RS that I can use a trilug on. Your replies are very helpful, thank you. I think I'll reorient my idea of putting a suppressor on it. I have this thing with an FRT if I want a little more firepower. 3 lug is an awesome mounting system.   " />I'll rethink getting one to see if it makes sense as an unsuppressed gun. |
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Originally Posted By Bye_Felicia: Just noticed you have the comp version. If it's like the 320 comp you need to verify it'll work with a longer barrel. My Legion 320 Flux I swapped the slide out because the integrated comp prevented you from using a longer barrel. Originally Posted By Bye_Felicia: Originally Posted By ELittlefield: https://www.youtube.com/watch?v=RPmjbEdcUZYhttps://fluxdefense.com/shop/raider-365-ultralight?attribute_color=BLACK&attribute_holster=Black+%28Included+%2B+%240.00%29 Hi guys, I'm very interested in the 365 PDW concept. I currently own a P365 X Macro, with the barrel a bit shorter than the slide, and cutouts in the slide to act as a compensator, and a mag well for 17 round X Macro magazines. Will my slide, barrel, and serial numbered FCU drop into this braced chassis? I'm a little unclear whether this is only made to work with the slimmer original P365, and I'm unsure what my slide is called in Sig's nomenclature. https://i.imgur.com/CI6zkHQ.jpeg" target="_blank">https://i.imgur.com/CI6zkHQ.jpeg Thanks guys! Just noticed you have the comp version. If it's like the 320 comp you need to verify it'll work with a longer barrel. My Legion 320 Flux I swapped the slide out because the integrated comp prevented you from using a longer barrel. Roger that. |
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Originally Posted By ELittlefield: Roger that. Originally Posted By ELittlefield: Originally Posted By Bye_Felicia: Originally Posted By ELittlefield: https://www.youtube.com/watch?v=RPmjbEdcUZYhttps://fluxdefense.com/shop/raider-365-ultralight?attribute_color=BLACK&attribute_holster=Black+%28Included+%2B+%240.00%29 Hi guys, I'm very interested in the 365 PDW concept. I currently own a P365 X Macro, with the barrel a bit shorter than the slide, and cutouts in the slide to act as a compensator, and a mag well for 17 round X Macro magazines. Will my slide, barrel, and serial numbered FCU drop into this braced chassis? I'm a little unclear whether this is only made to work with the slimmer original P365, and I'm unsure what my slide is called in Sig's nomenclature. https://i.imgur.com/CI6zkHQ.jpeg" target="_blank">https://i.imgur.com/CI6zkHQ.jpeg Thanks guys! Just noticed you have the comp version. If it's like the 320 comp you need to verify it'll work with a longer barrel. My Legion 320 Flux I swapped the slide out because the integrated comp prevented you from using a longer barrel. Roger that. Looks like you could use this barrel, with no shroud if you want to go supressed (assuming you have a small enough diameter can). |
"My friend, you would not tell with such high zest
To children ardent for some desperate glory,
The old Lie: Dulce et decorum est
Pro patria mori." -Wilfred Owen
To children ardent for some desperate glory,
The old Lie: Dulce et decorum est
Pro patria mori." -Wilfred Owen
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Originally Posted By Bye_Felicia: I haven't tried running mine suppressed yet, but I'm likely going with just a micro comp. I have the larger 320 flux setup with a suppressor and its not bad; but with the suppressor it doesn't seem as worth it when compared to something like my MP5-RS that I can use a trilug on. This little thing would make a hell of a BUG to a P365 pocket gun either off body, in a the glovebox, stashed somewhere, etc. Or in a shoulder holster like the Secret Service Uzi during the assignation attempt on Reagan. |
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Originally Posted By ELittlefield: Will my 17 round magazines work in this? FYI: If you are looking to buy mags or already have Magpul mags, I just found this: https://www.reddit.com/r/FluxDefense/comments/1pgajkd/magpul_amag_17rd_are_incompatible_with_both_flux/ |
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Originally Posted By dmk0210: Yeah, looking critically at the 320 version, it doesn't seem like it would have any advantage over a really small MP5k or AR PDW build (except for mag commonality). I've put that one in the cart and taken it out again over and over for a year now. This little thing would make a hell of a BUG to a P365 pocket gun either off body, in a the glovebox, stashed somewhere, etc. Or in a shoulder holster like the Secret Service Uzi during the assignation attempt on Reagan. FWIW the USSS Uzi pictured at the Reagan assassination attempt was in a case, not a shoulder holster. You can see the case with an Uzi foam cutout on the ground in the righthand side of the photo here. |
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There is also a Sig OEM polymer version with the FCU, 6" barrel, and mags that was supposed to be out month(s) ago. I've been waiting for this one as not going to convert the 365s I have now and hoping the math is slightly better than 'building' one from scratch. There were going to be three models including one with a red dot; now it looks like just two models; one standard, and a tac-pac with extra mags including a 25-rounder. FWIW, I've saved some money with Sig Connect -- hate buying ($80) into something like that, but between a grip module and all the mags I have bought for me and family it made sense. Saves $10 on the 17-round magazines and $14 on the 25-rounders -- more on some of the grip modules  
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Originally Posted By ELittlefield: I ordered an aluminum frame. I'm in it now. Did you order a aluminum FLUX frame or Sig P365 aluminum frame? With the responses it is hard to tell. I am interested in getting a FLUX frame for my P365 as well and wasn't sure what you have in mind. I do have a P320 FLUX Raider and I love it. It is a very nice design and more compact compared to other pcc, all things considered. I wish they could make one for the P365 like the P320. |
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Originally Posted By patw: Did you order a aluminum FLUX frame or Sig P365 aluminum frame? With the responses it is hard to tell. I am interested in getting a FLUX frame for my P365 as well and wasn't sure what you have in mind. I do have a P320 FLUX Raider and I love it. It is a very nice design and more compact compared to other pcc, all things considered. I wish they could make one for the P365 like the P320. Originally Posted By patw: Originally Posted By ELittlefield: I ordered an aluminum frame. I'm in it now. Did you order a aluminum FLUX frame or Sig P365 aluminum frame? With the responses it is hard to tell. I am interested in getting a FLUX frame for my P365 as well and wasn't sure what you have in mind. I do have a P320 FLUX Raider and I love it. It is a very nice design and more compact compared to other pcc, all things considered. I wish they could make one for the P365 like the P320. A P365 aluminum frame. |
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Ohhhhhhhhh yeah. This thing is sex on a stick. I think I'll roll with my factory, compensated X Macro slide, once I get my 3.7" barrel. Based on reports, I don't think I will bother trying to suppress it. This thing's real advantage is ultimate concealability from a braced gun. I'll lean into that.  " /> " /> " />
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Originally Posted By ELittlefield: As feared, the X Macro slide with comp cuts does not permit a full length barrel. Fuck me, this is getting expensive. Oh well, once I buy another FCU, at least I'll have an entire pistol's worth of parts that didn't work with the FLUX. @ELittlefield Don't worry bro, I'm right there with you. Just got my Raider UL yesterday and slapped my P365XL upper on it to test it out as I wait for a "new" P365XL to get get delivered. I found a FUSE threaded barrel, which may not work on the P365XL slide, so I found a spare FUSE slide on Ebay. Of course, my threaded barrel is only 5.3" and doesn't clear the shroud, so I said fucked it and ordered the True Precision 6.5" threaded barrel. At least I have a spare optic sitting unused  Flux P365 Raider UL Used P365XL (jsut for the FCU, it was only $50 more than a new FCU...of course now I'm tempted to just get a new FCU) FUSE threaded barrel (5.3") FUSE upper slide assembly Tru-Precision 6.5" barrel Oh, and while I have plenty of 17rd mags for P365/X/XL, I didn't have have any set up for the Raider, so I ordered some Magpul 17-rounders a few 21 OEM mags and one 25 round OEM mag. Nice little PDW turned into a damn many trap and I'll probably end up with a couple of new handguns I'll shoot a few rounds this afternoon (take a couple of pics) after work. I had to take the shroud off to run the Spectre 9k, so we'll see if that cycles okay on the Flux. ROCK6 |
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Originally Posted By ROCK6: @ELittlefield Don't worry bro, I'm right there with you. Just got my Raider UL yesterday and slapped my P365XL upper on it to test it out as I wait for a "new" P365XL to get get delivered. I found a FUSE threaded barrel, which may not work on the P365XL slide, so I found a spare FUSE slide on Ebay. Of course, my threaded barrel is only 5.3" and doesn't clear the shroud, so I said fucked it and ordered the True Precision 6.5" threaded barrel. At least I have a spare optic sitting unused Flux P365 Raider UL Used P365XL (jsut for the FCU, it was only $50 more than a new FCU...of course now I'm tempted to just get a new FCU) FUSE threaded barrel (5.3") FUSE upper slide assembly Tru-Precision 6.5" barrel Oh, and while I have plenty of 17rd mags for P365/X/XL, I didn't have have any set up for the Raider, so I ordered some Magpul 17-rounders a few 21 OEM mags and one 25 round OEM mag. Nice little PDW turned into a damn many trap and I'll probably end up with a couple of new handguns I'll shoot a few rounds this afternoon (take a couple of pics) after work. I had to take the shroud off to run the Spectre 9k, so we'll see if that cycles okay on the Flux. ROCK6 Originally Posted By ROCK6: Originally Posted By ELittlefield: As feared, the X Macro slide with comp cuts does not permit a full length barrel. Fuck me, this is getting expensive. Oh well, once I buy another FCU, at least I'll have an entire pistol's worth of parts that didn't work with the FLUX. @ELittlefield Don't worry bro, I'm right there with you. Just got my Raider UL yesterday and slapped my P365XL upper on it to test it out as I wait for a "new" P365XL to get get delivered. I found a FUSE threaded barrel, which may not work on the P365XL slide, so I found a spare FUSE slide on Ebay. Of course, my threaded barrel is only 5.3" and doesn't clear the shroud, so I said fucked it and ordered the True Precision 6.5" threaded barrel. At least I have a spare optic sitting unused Flux P365 Raider UL Used P365XL (jsut for the FCU, it was only $50 more than a new FCU...of course now I'm tempted to just get a new FCU) FUSE threaded barrel (5.3") FUSE upper slide assembly Tru-Precision 6.5" barrel Oh, and while I have plenty of 17rd mags for P365/X/XL, I didn't have have any set up for the Raider, so I ordered some Magpul 17-rounders a few 21 OEM mags and one 25 round OEM mag. Nice little PDW turned into a damn many trap and I'll probably end up with a couple of new handguns I'll shoot a few rounds this afternoon (take a couple of pics) after work. I had to take the shroud off to run the Spectre 9k, so we'll see if that cycles okay on the Flux. ROCK6 The Youtuber Brass Facts said in a video that you'll spend 2 grand on this thing. I scoffed, and said "bro it's only 650 bucks I already have the parts." Yeah. Real big brain on ELittlefield. |
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Originally Posted By ELittlefield: As feared, the X Macro slide with comp cuts does not permit a full length barrel. Fuck me, this is getting expensive. Oh well, once I buy another FCU, at least I'll have an entire pistol's worth of parts that didn't work with the FLUX. Can you Dremel the inside & make it work? |
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Originally Posted By backbencher: Can you Dremel the inside & make it work? Originally Posted By backbencher: Originally Posted By ELittlefield: As feared, the X Macro slide with comp cuts does not permit a full length barrel. Fuck me, this is getting expensive. Oh well, once I buy another FCU, at least I'll have an entire pistol's worth of parts that didn't work with the FLUX. Can you Dremel the inside & make it work? Possibly. I’m not taking a dremel to to the muzzle of the side though, which might in the future support a barrel bearing a silencer. Indeed I just had a Hux Flow 9 approved, which may fit this gun well. Incredibly lightweight, and low back pressure. |
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 Oh goodie. Another 13 dollars, and another 4-6 day wait. I am losing hope that I will ever fire this gun. Why in the hell are there different screw thread patterns in a standardized optic footprint??? And if there are, why would the Fuse slide not come with them? I dug through some old optic boxes, and found a set of screws that seems to work. Test firing will commence tomorrow. |
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| Snappy. Extremely snappy. I would not care to shoot this for a long range session. The shoulder recoil is astonishing for a 9mm, and the brace smacks me in the face. I'm sure I'll try to adjust my stance in the future. In 32 rounds, I had one failure to fully chamber, no big deal. If it's still happening after a hundred or two hundred rounds I'll address it. |
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Originally Posted By ELittlefield: Snappy. Extremely snappy. I would not care to shoot this for a long range session. The shoulder recoil is astonishing for a 9mm, and the brace smacks me in the face. I'm sure I'll try to adjust my stance in the future. In 32 rounds, I had one failure to fully chamber, no big deal. If it's still happening after a hundred or two hundred rounds I'll address it. Lightweight 9mm carbines seemingly have much more recoil than expected. |
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Originally Posted By ELittlefield: Are the magazine extensions reasonably reliable? @ELittlefield, are you referring to the extended OEM mags? I've got some 21 rounders and a 25 rounder; all feed perfectly fine. I don't have enough time with the Magpul (stainless) 17 rounders, so time will tell. ROCK6 |
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Originally Posted By ROCK6: @ELittlefield, are you referring to the extended OEM mags? I've got some 21 rounders and a 25 rounder; all feed perfectly fine. I don't have enough time with the Magpul (stainless) 17 rounders, so time will tell. ROCK6 Originally Posted By ROCK6: Originally Posted By ELittlefield: Are the magazine extensions reasonably reliable? @ELittlefield, are you referring to the extended OEM mags? I've got some 21 rounders and a 25 rounder; all feed perfectly fine. I don't have enough time with the Magpul (stainless) 17 rounders, so time will tell. ROCK6 I guess I was asking about extended base plates, but are there also long tube magazines from Sig themselves? |
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Originally Posted By ELittlefield: I guess I was asking about extended base plates, but are there also long tube magazines from Sig themselves? @ELittlefield I guess the Magpul mag base plates look bigger, but they're standard with their mags: Magpul P365 mag Sig has two OEM extended P365 mags, the 21 and 25 round mags: Sig OEM 21-round mag Sig OEM 25-round mag All my P365s are the original P365, X or XL sizes. No Macro or full size grip frames, so all my P365 mags (a shit ton) don't fit the Flux. I had a few 21-rounders, but ended up grabbing some of the Magpul mags to see how they run (and they're cheaper than OEM and I don't want to dig around for the flush 17rd base-plates )Magazine capacity is pretty versatile as I have some of older 15rd mags: 10rd, 12rd, 15rd, 17rd, 21rd and now 25rd Oh, add some MagGuts and I have some 10+2 and 12+12 mags sprinked in  ROCK6 |
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Originally Posted By ROCK6: @ELittlefield I guess the Magpul mag base plates look bigger, but they're standard with their mags: Magpul P365 mag Sig has two OEM extended P365 mags, the 21 and 25 round mags: Sig OEM 21-round mag Sig OEM 25-round mag All my P365s are the original P365, X or XL sizes. No Macro or full size grip frames, so all my P365 mags (a shit ton) don't fit the Flux. I had a few 21-rounders, but ended up grabbing some of the Magpul mags to see how they run (and they're cheaper than OEM and I don't want to dig around for the flush 17rd base-plates )Magazine capacity is pretty versatile as I have some of older 15rd mags: 10rd, 12rd, 15rd, 17rd, 21rd and now 25rd Oh, add some MagGuts and I have some 10+2 and 12+12 mags sprinked in ROCK6 Originally Posted By ROCK6: Originally Posted By ELittlefield: I guess I was asking about extended base plates, but are there also long tube magazines from Sig themselves? @ELittlefield I guess the Magpul mag base plates look bigger, but they're standard with their mags: Magpul P365 mag Sig has two OEM extended P365 mags, the 21 and 25 round mags: Sig OEM 21-round mag Sig OEM 25-round mag All my P365s are the original P365, X or XL sizes. No Macro or full size grip frames, so all my P365 mags (a shit ton) don't fit the Flux. I had a few 21-rounders, but ended up grabbing some of the Magpul mags to see how they run (and they're cheaper than OEM and I don't want to dig around for the flush 17rd base-plates )Magazine capacity is pretty versatile as I have some of older 15rd mags: 10rd, 12rd, 15rd, 17rd, 21rd and now 25rd Oh, add some MagGuts and I have some 10+2 and 12+12 mags sprinked in ROCK6 Nice, thank you. |
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Everything I've read was the shorter pistol baes plate adapters being finicky. Since all my OEM mags are used for the P365/X/XL, I haven't used any of the MagPul mags with their shorter baseplate adapters, just the standard 17rd mag (Macro/Fuse models), which has fed and fit fine in the Flux chassis grip. To be fair, I’ve only used a few of the mags and only 10 rounds per mag. I did struggle to load a few up to the full 17 rounds as the spring is quite stiff. I need to get them all loaded and let them sit for a couple weeks. ROCK6 |
"The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants" - Thomas Jefferson
 My SBR’d XMacro Flux Raider (aluminum): Attached File Attached File I also have the True Precision threaded barrel: Attached File * don’t mind the charging handle where the optic cutout is…😎 The Sig 21 and 25 round mags are absolutely good to go. It’s slightly better/easier to shoot with the SBR stock as opposed to the pistol brace but no question it’s snappy as some folks have mentioned… I went with the forward mounted optic for reasons. Also, in this PCC-like configuration I feel a manual safety is mandatory and if you don’t have one you can add it very easily. With the stock recoil spring I couldn’t get it to run with my OSS/HUXWRX Rad .45 can. I’m currently looking for something Ti/hyper light and booster less to run dedicated. Flux has an informative suppressor spreadsheet on their website where you can upload your personal experience as a guide/warning to others… I’ve let a couple of people shoot it and activating the stock release and shooting steel at distance is fun and easy with it. |
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Originally Posted By MikeWhiskey: With the stock recoil spring I couldn’t get it to run with my OSS/HUXWRX Rad .45 can. I’m currently looking for something Ti/hyper light and booster less to run dedicated. Flux has an informative suppressor spreadsheet on their website where you can upload your personal experience as a guide/warning to others… I’ve let a couple of people shoot it and activating the stock release and shooting steel at distance is fun and easy with it. Damn, that wrap makes it literally blend into the background of whatever tabletop it's sitting on! I like that forward mount but I wanted to keep mine "holster friendly". I just got my FUSE slide yesterday and added the True Precision 6.5" threaded barrel so I could keep the shroud on the chassis. No pictures yet, but like it. I'll have to rip a few rounds through it to test reliability today or tomorrow after work. I ran my XL slide (seen above) with a Spectre 9k and booster with zero issues and the OEM spring. I also have the direct threat SAW Shiv (very, very tiny and light), but want to keep my Griffin Armament Eze-Lok piston ecosystem consistent. I think the Spectre 9k will be dedicated if it proves to run reliably with the longer barrel. ROCK6 |
"The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants" - Thomas Jefferson
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Originally Posted By ROCK6: Damn, that wrap makes it literally blend into the background of whatever tabletop it's sitting on! I like that forward mount but I wanted to keep mine "holster friendly". I just got my FUSE slide yesterday and added the True Precision 6.5" threaded barrel so I could keep the shroud on the chassis. No pictures yet, but like it. I'll have to rip a few rounds through it to test reliability today or tomorrow after work. I ran my XL slide (seen above) with a Spectre 9k and booster with zero issues and the OEM spring. I also have the direct threat SAW Shiv (very, very tiny and light), but want to keep my Griffin Armament Eze-Lok piston ecosystem consistent. I think the Spectre 9k will be dedicated if it proves to run reliably with the longer barrel. ROCK6 Flux was offering the grip wrap and “desert tiger stripe” is perfect for my environment. The FDE chassis literally came out the day or two after I had ordered mine otherwise I would have gotten that one. I also added the TiN extended slide and safety from Armory Craft…for reasons! https://www.armorycraft.com/product-page/armory-craft-sig-sauer-p365-extended-slide-release Attached File Enhanced function AND pimp-tastic! I also have Tactical Development’s slide racking plate which makes it extremely easy to rack the slide with the stock folded or press-check: https://tactical.dev/products/f10-slide-racking-optic-plate-for-p365-slides?_pos=19&_sid=0ad73fe41&_ss=r The forward mounted optic does prevent holster use but I decided I was going to SBR an aluminum chassis Flux Raider with the forward mounted optic and buy a polymer Flux Raider and keep the brace, mount an optic on the slide and run it in the holster they sell… Likewise my plan with the can is to run it dedicated, thanks for posting your can experience and keep us posted with your test fire. |
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"The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants" - Thomas Jefferson
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Originally Posted By ROCK6: I just got to find some time, but I finally added True-Precision's 6.5" threaded barrel, put the Griffin Armament Eze-Lok muzzle adapter on it and it look like I'll be using the SiCo Spectre 9k the most with this little BDE. I need to do some shooting drills with it from the holster, but that will have to wait a couple weeks (I don't like to fire very much unsuppressed on my property). The more I handle and shoot it, the more I'm like this setup. The only damn problem with the FLUX: I found a good deal on a P365XL and now have that FCU in my FLUX. BUT, now I have a new Wilson Combat frame (X/XL size), I have spare P365 barrels/recoil springs and found a used P365 slide with optics cut now on it's way which forced me to buy new FCU and optic. I really need to just sell the XL slide assembly so I'm not tempted to grow that back into a handgun. Currently: 2 x P365s 1 x P365Xs 2 x P365XLs 1 x FLUX/FUSE 1 x P365X getting assembled. I'm all in on this platform, they work great for my patrolling kit (just LARPing property patrollling), great CCW that shoots well for me and now with a very viable, compatible PDW (I do have the FLUX with a Glock 17 and Recover Tactical with G34). https://hosting.photobucket.com/3a5ba44e-72a5-4ded-b00a-39a4440c67c0/2d4b5fe0-34eb-43e8-88ab-1b3a57e31810.jpg?width=960&height=720&fit=bounds" target="_blank">https://hosting.photobucket.com/3a5ba44e-72a5-4ded-b00a-39a4440c67c0/2d4b5fe0-34eb-43e8-88ab-1b3a57e31810.jpg?width=960&height=720&fit=bounds There may be a lot of bad shit about Sig Sauer, but the P365 ecosystem isn't one of them. ROCK6 Originally Posted By ROCK6: Originally Posted By ELittlefield: I ordered a threaded barrel. I'm going to attempt using my Rugged Obsidian 45 in short configuration. I just got to find some time, but I finally added True-Precision's 6.5" threaded barrel, put the Griffin Armament Eze-Lok muzzle adapter on it and it look like I'll be using the SiCo Spectre 9k the most with this little BDE. I need to do some shooting drills with it from the holster, but that will have to wait a couple weeks (I don't like to fire very much unsuppressed on my property). The more I handle and shoot it, the more I'm like this setup. The only damn problem with the FLUX: I found a good deal on a P365XL and now have that FCU in my FLUX. BUT, now I have a new Wilson Combat frame (X/XL size), I have spare P365 barrels/recoil springs and found a used P365 slide with optics cut now on it's way which forced me to buy new FCU and optic. I really need to just sell the XL slide assembly so I'm not tempted to grow that back into a handgun. Currently: 2 x P365s 1 x P365Xs 2 x P365XLs 1 x FLUX/FUSE 1 x P365X getting assembled. I'm all in on this platform, they work great for my patrolling kit (just LARPing property patrollling), great CCW that shoots well for me and now with a very viable, compatible PDW (I do have the FLUX with a Glock 17 and Recover Tactical with G34). https://hosting.photobucket.com/3a5ba44e-72a5-4ded-b00a-39a4440c67c0/2d4b5fe0-34eb-43e8-88ab-1b3a57e31810.jpg?width=960&height=720&fit=bounds" target="_blank">https://hosting.photobucket.com/3a5ba44e-72a5-4ded-b00a-39a4440c67c0/2d4b5fe0-34eb-43e8-88ab-1b3a57e31810.jpg?width=960&height=720&fit=bounds There may be a lot of bad shit about Sig Sauer, but the P365 ecosystem isn't one of them. ROCK6 I'm buying a threaded barrel designed for my 4.3" slide. I want to avoid the longer barrel, as in my mind with a can, it would increase the stress on the system. The weight being further out. I'd rather have a barrel that is supported by the slide right up to the threads. Perhaps I'm overthinking it, but that's my rationale. |
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Originally Posted By ELittlefield: I'm buying a threaded barrel designed for my 4.3" slide. I want to avoid the longer barrel, as in my mind with a can, it would increase the stress on the system. The weight being further out. I'd rather have a barrel that is supported by the slide right up to the threads. Perhaps I'm overthinking it, but that's my rationale. Yeah, I have a threaded FUSE barrel (shorter than the 6.5" threaded barrel). I'm going to tweak this a little as I wanted to keep the shroud on for now; anything shorter, I would have to dump the shroud. ROCK6 |
"The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants" - Thomas Jefferson
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| A question for y'all, who does the engraving on the FCU for SBR registration? I've used Tar Heel State many times for AR receivers. How visible does the engraving need to be on a gun like this? |
It was not preached to the crowd,
It was not taught by the State.
No man spoke it aloud,
When the English began to hate.
It was not taught by the State.
No man spoke it aloud,
When the English began to hate.
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Originally Posted By ELittlefield: A question for y'all, who does the engraving on the FCU for SBR registration? I've used Tar Heel State many times for AR receivers. How visible does the engraving need to be on a gun like this? Just wait a few months and it won't be required. |
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Originally Posted By CleverNickname: Just wait a few months and it won't be required. Originally Posted By CleverNickname: Originally Posted By ELittlefield: A question for y'all, who does the engraving on the FCU for SBR registration? I've used Tar Heel State many times for AR receivers. How visible does the engraving need to be on a gun like this? Just wait a few months and it won't be required. Okay. |
It was not preached to the crowd,
It was not taught by the State.
No man spoke it aloud,
When the English began to hate.
It was not taught by the State.
No man spoke it aloud,
When the English began to hate.
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So, I pulled off the Eze-Lok muzzle device and replaced the Spectre 9k with SAW shiv (no booster) and my 6.5" barrel Flux cycled flawlessly. Subsonic brass was only kicking out about 6-8" but it was doing it reliably. I think I just need to put some more rounds through the Flux/Fuse just to break it in. I did get the Armory Craft spring kit, but holding of doing any tuning until I can get another couple hundred rounds through it. Ironically, I can get the Flux with Shiv into the holster and when I draw it out, it automatically (inadvertently?) deploys the brace. That's a nice feature. I did have one issue with my Flux, the forward grip housing would drop the mag when shooting. Jake at Flux sent me a replacement kit, but I also found out that you can use an AR15 buffer tube stop spring, cutting it into two gives you a little more tension and length For those unaware, the forward magazine holder is a double-release mechanism. You can use the thumb latch to release just that magazine, or you can use the grip mounted magazine slide button and if you push it forward far enough it will release the grip magazine and the forward mag at the same time. It's pretty effective at speed reloads and a nice feature whether you use it or not. ROCK6 |
"The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants" - Thomas Jefferson