AR Sponsor
Joined:
Mar 2022
Posts:
2168
EE: 99% (90)
PA, USA
Posted: 9/4/2024 7:36:24 PM EDT
[Last Edit: RangeToy][Edited]
|
First, aside from suppression, lightweight is a main goal hence the 2 cans I narrowed it to below. Had a 7.5" AR years ago way before I got into suppressors. No complaints, but never shot it so sold it. Now here I am decided whether or not I want to get another 9mm/300BO can or a 30 Cal can. I'd either get the Griffin Explorr 300 or SiCo Scythe Ti if going 30 Cal and there is my excuse to build another 7.5" AR (Would be run suppressed full-time) Or would that be a waste of $ since it would likely still be too loud to make spending all that $ worth it? Said 7.5" AR would just be a range toy, but I suppose it could double for HD if I wanted. I have a lower setup collecting dust that just needs a barrel, muzzle device & handguard. I don't need to start from scratch FWIW. Every time I think I have my mind made up, I keep going back & forth... I already have a 9" 300BO so don't need another 300BO I already own the cans below & the SOCOM is on my main AR full-time & the T3 is on my SBR & could rotate, but really want a lightweight can lol Oculus 22 Obsidian 9 Turbo T3 SOCOM MINI2 Odessa 9 Erector 22 VersaX 12GA |
Joined:
Mar 2022
Posts:
2170
EE: 99% (90)
PA, USA
7.5 is a bit big  For fun I did a 5" SLR set up. The Sandman K now has less finish on it. Attached File |
|
Originally Posted By RangeToy: I already have a 9" 300BO Sounds like it's about an inch and a half too long. I'd not have a 7.5" 5.56/.223 personally. Even with a can it's ungodly loud, yet with a can is still long. Not really sure the benefit is. But if you want it to want it... Why not. I have plenty of guns that don't serve a real purpose. |
Joined:
Mar 2022
Posts:
2171
EE: 99% (90)
PA, USA
|
Originally Posted By -Obsessed-: Sounds like it's about an inch and a half too long. I'd not have a 7.5" 5.56/.223 personally. Even with a can it's ungodly loud, yet with a can is still long. Not really sure the benefit is. But if you want it to want it... Why not. I have plenty of guns that don't serve a real purpose. Tell me about your experience shooting a 7.5" 5.56 suppressed |
Joined:
Mar 2022
Posts:
2172
EE: 99% (90)
PA, USA
Joined:
Mar 2022
Posts:
2173
EE: 99% (90)
PA, USA
|
Originally Posted By RangeToy: Tell me about your experience shooting a 7.5" 5.56 suppressed A few hundred rounds outdoors per year over the course of the last decade. Friend has one. I shoot it side by side my 8" 300BLK and my 16" suppressed 5.56 and the 7.5" is far, far, far louder than the other two and the 16" is again far, far louder than the 300 BLK. 5.56 cans were both RC2s and the 300 BLK has a Genesis, for what that's worth. |
Joined:
Mar 2022
Posts:
2175
EE: 99% (90)
PA, USA
|
Originally Posted By -Obsessed-: A few hundred rounds outdoors per year over the course of the last decade. Friend has one. I shoot it side by side my 8" 300BLK and my 16" suppressed 5.56 and the 7.5" is far, far, far louder than the other two and the 16" is again far, far louder than the 300 BLK. 5.56 cans were both RC2s and the 300 BLK has a Genesis, for what that's worth. Appreciate the feedback |
Joined:
Mar 2022
Posts:
2176
EE: 99% (90)
PA, USA
|
I don't understand the goal here. If it is just a range toy, do what you want. If you are asking for serious consideration in tech, and you want a 7.5" AR. I suggest .22LR, 300blk, or pistol caliber. I have a 7.5" 300blk with a pinned gas block Faxon Gunner barrel. Love that profile, and it is super light weight. Also have a 9" .22LR that is more like an 8" barrel. That is awesome as well. |
Joined:
Mar 2022
Posts:
2178
EE: 99% (90)
PA, USA
|
Originally Posted By panthermark: I don't understand the goal here. If it is just a range toy, do what you want. If you are asking for serious consideration in tech, and you want a 7.5" AR. I suggest .22LR, 300blk, or pistol caliber. I have a 7.5" 300blk with a pinned gas block Faxon Gunner barrel. Love that profile, and it is super light weight. Also have a 9" .22LR that is more like an 8" barrel. That is awesome as well. It would just be a toy. Please no more 300BO suggestions. Already taken care of. YMMV. I thought about doing a 22LR pistol as well |
|
How about a 8”AR in 5.7x28mm? It’s a fun range gun. Attached File |
Joined:
Mar 2022
Posts:
2184
EE: 99% (90)
PA, USA
|
Originally Posted By alpharph: How about a 8”AR in 5.7x28mm? It’s a fun range gun. https://www.ar15.com/media/mediaFiles/233426/IMG_1580_jpeg-3314145.JPG I divested of all my 5.7x28 |
|
I ran a 7.5" for a while. A suppressor was not an option way back then due to state laws. One heck of a muzzle blast until the Noveske Pig came about. One day shooting steel with another officer who had a 11.5" barrel (which I also had before I went to the 7.5") it was so clear how much more energy the same round had upon impact of the steel. I swapped back to my 11.5" upper. Then went 300 blk in late 2011. If it's a range toy build it and run it. If you are looking for more than a range toy, give some serious consideration to a 10-11.5" barrel. Mike |
|
I had a 7.5 inch bbl originally on this but my suppressor wouldn’t clear the rail with the SiCo QD mount. So I ended up putting an 8” bbl on it. I personally love this pistol. It’s my go to AR right now for close range/NV shooting it’s amazing. It’s required a bit of tweaking to get running 100% reliably. I had to get an adjustable gas block to get gas flow dialed in. Attached File Attached File |
Joined:
Mar 2022
Posts:
2187
EE: 99% (90)
PA, USA
|
Originally Posted By ak4784: I had a 7.5 inch bbl originally on this but my suppressor wouldn’t clear the rail with the SiCo QD mount. So I ended up putting an 8” bbl on it. I personally love this pistol. It’s my go to AR right now for close range/NV shooting it’s amazing. It’s required a bit of tweaking to get running 100% reliably. I had to get an adjustable gas block to get gas flow dialed in. https://www.ar15.com/media/mediaFiles/53193/IMG_5871_jpeg-3314448.JPG https://www.ar15.com/media/mediaFiles/53193/IMG_5902_jpeg-3314449.JPG |
Joined:
Mar 2022
Posts:
2188
EE: 99% (90)
PA, USA
|
Originally Posted By VT_K9: I ran a 7.5" for a while. A suppressor was not an option way back then due to state laws. One heck of a muzzle blast until the Noveske Pig came about. One day shooting steel with another officer who had a 11.5" barrel (which I also had before I went to the 7.5") it was so clear how much more energy the same round had upon impact of the steel. I swapped back to my 11.5" upper. Then went 300 blk in late 2011. If it's a range toy build it and run it. If you are looking for more than a range toy, give some serious consideration to a 10-11.5" barrel. Mike I have a 12.5 SBR already. Just looking for a fun toy |
|
Originally Posted By RangeToy: build info? What can? Vids of shooting? @RangeToy Aero Lower Colt upper/BCG Ballistic Advantage 8" bbl SBHBPDW brace Aero Lahar 30K suppressor Silencer Co ASR muzzle brake Silencer Co mount SLR rail- forgot model SLR adj gas block Larue MBT trigger EoTech XPS3-0 Unity Absolute riser Surefire Mini Turbo Duel Fuel Russian PERST LAM I can upload a video clip of it shooting to YT and post it in a bit. Its not quiet. Its still kinda loud but it isn't bad at all. The can certainly takes the massive blast way way down. Its pleasant to shoot. Other people at the range are always impressed(people that dont know much about suppressors). I fuckin love the thing lol. It would be quieter with a full sized can made for 5.56 but I don't care. I am obviously not trying to build the quietest AR by any means. I wanted a short compact 556 AR pistol with all the NV stuff on it for traveling. This isn't for long range and ballistics are not that important to me. I carry a few mags loaded with good quality SD ammo. I am not relying on standard M193 or M855 for this rifle to be effective. Its for discreet travel and defense inside a home or building...and fun. Within 50 yards it will 100% do a lot of damage to a threat. I am not too worried about ballistics and all the arguments folks have about short bbl 556 ARs. |
Joined:
Mar 2022
Posts:
2196
EE: 99% (90)
PA, USA
|
Originally Posted By ak4784: @RangeToy Aero Lower Colt upper/BCG Ballistic Advantage 8" bbl SBHBPDW brace Aero Lahar 30K suppressor Silencer Co ASR muzzle brake Silencer Co mount SLR rail- forgot model SLR adj gas block Larue MBT trigger EoTech XPS3-0 Unity Absolute riser Surefire Mini Turbo Duel Fuel Russian PERST LAM I can upload a video clip of it shooting to YT and post it in a bit. Its not quiet. Its still kinda loud but it isn't bad at all. The can certainly takes the massive blast way way down. Its pleasant to shoot. Other people at the range are always impressed(people that dont know much about suppressors). I fuckin love the thing lol. It would be quieter with a full sized can made for 5.56 but I don't care. I am obviously not trying to build the quietest AR by any means. I wanted a short compact 556 AR pistol with all the NV stuff on it for traveling. This isn't for long range and ballistics are not that important to me. I carry a few mags loaded with good quality SD ammo. I am not relying on standard M193 or M855 for this rifle to be effective. Its for discreet travel and defense inside a home or building...and fun. Within 50 yards it will 100% do a lot of damage to a threat. I am not too worried about ballistics and all the arguments folks have about short bbl 556 ARs. Awesome, thanks. Looking forward to the video |
|
If you are happy with a really loud and expensive .22 magnum, go for it. Seriously, I've shot one, supressed, they are fun. They are silly and a terrible spec, but that doesn't mean they aren't fun. I'd never build one personally. I have even more fun running .22LR if I'm just playing. You're basically in P90 territory there, so... get a P90, way more fun and purpose built. JMHO, - since ya asked. |
|
Originally Posted By DuneShoot: 7.5 is a bit big For fun I did a 5" SLR set up. The Sandman K now has less finish on it. https://www.ar15.com/media/mediaFiles/247601/IMG_5260_jpg-3313504.JPG Op. This is the way.   It’s currently suppressed. The bottom is an old photo. Mine is a 4.75 Kak setup. |
Esstac’s Retarded Social Media Influencer
| If I am building an AR, investing in another can, or investing in a new caliber, I want the build to be functional for a purpose beyond just a range toy. A purposeful, reliable build can be a fun range toy (many of mine are), but a range toy is rarely a functional or reliable build for other uses. I've gone down this road before with pistol calibers and 7.62x39 for example, but things like bolt breakage, non standard magazines or parts that frequently malfunction, and constant reliability issues take the fun out of even a range toy... but I guess it depends on the user's definition of fun, and the user's time and wallet. A suppressed 7.5 is a handy and fun combination in calibers designed to be suppressed, but utterly sucks in calibers that were never designed to be suppressed or run out of a barrel that short, IMO. I wouldn't dismiss a round that has been proven to work with this combination simply because I already have a build in that caliber. YMMV. Besides, remember the ARFCOM mantra, "Two is one. One is none." |
Joined:
Mar 2022
Posts:
2198
EE: 99% (90)
PA, USA
|
Originally Posted By NachoDip: Op. This is the way. https://www.ar15.com/media/mediaFiles/77421/IMG_5521-3301131.jpg https://www.ar15.com/media/mediaFiles/77421/IMG_4421-3221254.jpg It's currently suppressed. The bottom is an old photo. Mine is a 4.75 Kak setup. @NachoDip Did the can quiet it enough to be fun vs just stupid loud? |
Joined:
Mar 2022
Posts:
2199
EE: 99% (90)
PA, USA
|
Originally Posted By Rkangel777: If I am building an AR, investing in another can, or investing in a new caliber, I want the build to be functional for a purpose beyond just a range toy. A purposeful, reliable build can be a fun range toy (many of mine are), but a range toy is rarely a functional or reliable build for other uses. I've gone down this road before with pistol calibers and 7.62x39 for example, but things like bolt breakage, non standard magazines or parts that frequently malfunction, and constant reliability issues take the fun out of even a range toy... but I guess it depends on the user's definition of fun, and the user's time and wallet. A suppressed 7.5 is a handy and fun combination in calibers designed to be suppressed, but utterly sucks in calibers that were never designed to be suppressed or run out of a barrel that short, IMO. I wouldn't dismiss a round that has been proven to work with this combination simply because I already have a build in that caliber. YMMV. Besides, remember the ARFCOM mantra, "Two is one. One is none." I already have the SHTF AR covered. I also already have a 300BO. My other ARs are suppressed full-time. I don't see why the 7.5" would suddenly be unreliable. All the same parts as any other AR. I had a 7.5" years ago and no reliability issues. That was before I got into suppressors, though. |
|
So you are willing to spend $600-1000 (stamp included) just to lower the massive blast from a 7.5" 556 upper? I know cause I had one too. All to keep it super short? It will suppress like shit. Why .223? Why not get a CMMG 6.5" Dissent upper in 9mm? Use Mean arms Endo or Exo mags and use any of your AR15 lowers? And it can be a side folder. |
|
Originally Posted By RangeToy: I already have the SHTF AR covered. I also already have a 300BO. My other ARs are suppressed full-time. I don't see why the 7.5" would suddenly be unreliable. All the same parts as any other AR. I had a 7.5" years ago and no reliability issues. That was before I got into suppressors, though. I was referring to alternative calibers in the ar platform vs reliability. It sounds like you want to do a full time suppressed 7.5" 5.56. Sure, they can be made to work reliably. Variety is the spice of life, build what you think you will like. For me the juice wasn't worth the squeeze trying to suppress a 5.56 that short... Ballistics are spotty...suppression is iffy...and it seemed like I was investing a lot of money for performance that was struggling to be mediocre in both categories. I chose to move away from 7.5" 5.56 for these reasons and stick with 300blk. Everyone's different, so YMMV. |
Joined:
Mar 2022
Posts:
2206
EE: 99% (90)
PA, USA
|
Originally Posted By networkguru: So you are willing to spend $600-1000 (stamp included) just to lower the massive blast from a 7.5" 556 upper? I know cause I had one too. All to keep it super short? It will suppress like shit. Why .223? Why not get a CMMG 6.5" Dissent upper in 9mm? Use Mean arms Endo or Exo mags and use any of your AR15 lowers? And it can be a side folder. I have an EP9 |
|
YouTube short for ya. Personally. This is just my opinion. Ballistics are fine if you run the right ammo at the right distance in short 556. It will do plenty of damage to a person down a hallway. I’m really not sure why people think an extra 3” of bbl suddenly makes things drastically different. Sure it will improve a bit but you may as well just run a full 20inch if we continue down that path. Anyway, mine suppressed very well I think. The video speaks for itself.  Suppressed 8” 5.56 Not sure why this short won’t imbed. I tried all the known tricks to get it to work. No go. YT link |
|
Originally Posted By RangeToy: @NachoDip Did the can quiet it enough to be fun vs just stupid loud? All guns are fun. Suppressed 7.5 is still loud. I found that a larger internal volume of this can helped a bit. It’s short but it’s also very large diameter suppressor. Is the 7.5 hearing safe with a can? No. Is it reasonable to grab in the middle of the night loaded with M855A1 and ready to rock and roll with an intruder without muffs? Yes. Still not hearing safe. But reasonable blast has been quelled and 40-60 rounds of “fuck you and go away” is fine. |
Esstac’s Retarded Social Media Influencer
|
Originally Posted By lazyengineer: If you are happy with a really loud and expensive .22 magnum, go for it. Seriously, I've shot one, supressed, they are fun. They are silly and a terrible spec, but that doesn't mean they aren't fun. I'd never build one personally. I have even more fun running .22LR if I'm just playing. You're basically in P90 territory there, so... get a P90, way more fun and purpose built. JMHO, - since ya asked. A 5.56 is in no way comparable to a 22wmr in a 7.5” barrel |
R.I.P. Beau 8-17-2022
Joined:
Mar 2022
Posts:
2207
EE: 99% (90)
PA, USA
|
Originally Posted By NachoDip: All guns are fun. Suppressed 7.5 is still loud. I found that a larger internal volume of this can helped a bit. It’s short but it’s also very large diameter suppressor. Is the 7.5 hearing safe with a can? No. Is it reasonable to grab in the middle of the night loaded with M855A1 and ready to rock and roll with an intruder without muffs? Yes. Still not hearing safe. But reasonable blast has been quelled and 40-60 rounds of “fuck you and go away” is fine. Thanks. Not looking for hearing safe. I'd be running a Scythe Ti can on it |
Joined:
Mar 2022
Posts:
2208
EE: 99% (90)
PA, USA
|
Originally Posted By ak4784: YouTube short for ya. Personally. This is just my opinion. Ballistics are fine if you run the right ammo at the right distance in short 556. It will do plenty of damage to a person down a hallway. I’m really not sure why people think an extra 3” of bbl suddenly makes things drastically different. Sure it will improve a bit but you may as well just run a full 20inch if we continue down that path. Anyway, mine suppressed very well I think. The video speaks for itself.  https://www.youtube.com/shorts/dCZQXaX90PINot sure why this short won’t imbed. I tried all the known tricks to get it to work. No go. YT link That sounds quieter than I expected. Nice! |
|
Originally Posted By RangeToy: Thanks. Not looking for hearing safe. I'd be running a Scythe Ti can on it Then you already are set up for it. Get building! Seriously though. I would suggest looking at the KAK 4.75 complete upper, or their barrel/gas tube kit if you were considering smaller than a 7.5. Price is reasonable and the enjoyment per shot goes up. The ridiculous short barrels are a fun. And your screen name shows that you get it. My range toy that gets big attention is my PTR91 PDW 8” 308 and my 4.75. I put the comp on the 4.75 and shot it at a group event in the Washington hometown forum. Everyone wanted to try it. Many fired one shot and then handed it back. Add a suppressor and it’s pretty easy. Put a comp on it and it becomes a barking beast that you can feel the pulse through your sinuses and teeth. No. Not joking. Do it for fun and you won’t regret it |
Esstac’s Retarded Social Media Influencer
Joined:
Mar 2022
Posts:
2210
EE: 99% (90)
PA, USA
|
Originally Posted By NachoDip: Then you already are set up for it. Get building! Seriously though. I would suggest looking at the KAK 4.75 complete upper, or their barrel/gas tube kit if you were considering smaller than a 7.5. Price is reasonable and the enjoyment per shot goes up. The ridiculous short barrels are a fun. And your screen name shows that you get it. My range toy that gets big attention is my PTR91 PDW 8” 308 and my 4.75. I put the comp on the 4.75 and shot it at a group event in the Washington hometown forum. Everyone wanted to try it. Many fired one shot and then handed it back. Add a suppressor and it’s pretty easy. Put a comp on it and it becomes a barking beast that you can feel the pulse through your sinuses and teeth. No. Not joking. Do it for fun and you won’t regret it Why 4.75" over 7.5"? I have everything but a HG & barrel already |
|
Originally Posted By RangeToy: Why 4.75" over 7.5"? I have everything but a HG & barrel already I think it’s just more handy in its compactness. However if you already have most of the parts go for it and do a 7.5. Currently I have a 4.75, 7.5, 8.5, 10.25, 11.5, 14.5. 16, 18, 20, and a 24”. Those are just in 5.56/223 Add in a bunch of 9mm lengths for PCC. Of the ones I have. In the last year, the 11.5, 4.75, and 7.5 have the most use. The 11.5 is a HD gun. The other two are just for fun. But lately I have been looking more of the serious use of the 7.5 and 4.75. They are handy and ultra compact. Both of the super shorties have proven to be reliable as well. Only hard part about the 4.75 is the weird and ultra short gas system. The 7.5 uses the pistol length that is very common now. Either way you’ll enjoy it. Post photos. I need to put a new handguard on my 7.5. I don’t like the one on it. I also want to put a new handguard on the 4.75. Strangely I am also looking at the KAK complete upper in 7.62x39. I have a KS47 that would be a hoot with a super short barrel on it. |
Esstac’s Retarded Social Media Influencer
Joined:
Mar 2022
Posts:
2216
EE: 99% (90)
PA, USA
|
Originally Posted By NachoDip: I think it’s just more handy in its compactness. However if you already have most of the parts go for it and do a 7.5. Currently I have a 4.75, 7.5, 8.5, 10.25, 11.5, 14.5. 16, 18, 20, and a 24”. Those are just in 5.56/223 Add in a bunch of 9mm lengths for PCC. Of the ones I have. In the last year, the 11.5, 4.75, and 7.5 have the most use. The 11.5 is a HD gun. The other two are just for fun. But lately I have been looking more of the serious use of the 7.5 and 4.75. They are handy and ultra compact. Both of the super shorties have proven to be reliable as well. Only hard part about the 4.75 is the weird and ultra short gas system. The 7.5 uses the pistol length that is very common now. Either way you’ll enjoy it. Post photos. I need to put a new handguard on my 7.5. I don’t like the one on it. I also want to put a new handguard on the 4.75. Strangely I am also looking at the KAK complete upper in 7.62x39. I have a KS47 that would be a hoot with a super short barrel on it. Damn, you have all the toys lol 
|
|
Originally Posted By WJP556: Rated cans was going to be my question as well Quite a few cans have zero barrel length restrictions. My Griffin cans state in the paperwork with the can that there is no barrel length restrictions. The following do not have a barrel length restriction. https://www.silencershop.com/b-t-srbs-556-dm-inconel-blk.html https://www.griffinarmament.com/recce-5k-suppressor/ https://www.rainierarms.com/cgs-group-helios-qd-5-56mm-suppressor/ https://silencerco.com/shop/velos-lbp/ https://ruggedsuppressors.com/rifle-suppressors/radiant762/ |
Esstac’s Retarded Social Media Influencer
|
Originally Posted By ak4784: The Aero Lahars also have no bbl length restrictions and are FA rated. Plus they are very affordable. Thats why I went with it. I can abuse the shit out of it and not feel bad I got the B&T cans from Armsunlimited for $370 ea for the same reason. |
Esstac’s Retarded Social Media Influencer
|
Originally Posted By ak4784: YouTube short for ya. Personally. This is just my opinion. Ballistics are fine if you run the right ammo at the right distance in short 556. It will do plenty of damage to a person down a hallway. I’m really not sure why people think an extra 3” of bbl suddenly makes things drastically different. Sure it will improve a bit but you may as well just run a full 20inch if we continue down that path. Anyway, mine suppressed very well I think. The video speaks for itself. https://www.youtube.com/shorts/dCZQXaX90PINot sure why this short won’t imbed. I tried all the known tricks to get it to work. No go. YT link Well the 3" make a huge difference for a variety of reasons (Carbine gas length to Pistol gas length, loss of velocity, higher port pressure), but I'm curious about the ammo. What are you using? I remember looking at some Poboy vids from awhile ago, and I remember a bunch of loads didn't work, but a few did expand or fragment out of a 7.5" 5.56 M855A1, Hornady 55gr TAP, and Federal Mk318 still worked. The Barnes loads (.223 55gr and 5.56 70gr) did not. I don't know if a 5.56 62gr Barnes load would work, or a Fusion MSR load. |
Joined:
Mar 2022
Posts:
2227
EE: 99% (90)
PA, USA
AR Sponsor