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Posted: 6/7/2017 9:24:25 AM EDT
[#1]
upper is on sale at palmetto state armory, not sure if they have the mag block.
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Posted: 6/7/2017 9:29:28 AM EDT
[#2]
PSA now has .45 lowers also.
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Posted: 6/7/2017 9:42:51 AM EDT
[#3]
PSA is the quick and easy WAY RIGHT NOW.
@madmachinist is who I would have do it for me though. |
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Posted: 6/7/2017 2:07:43 PM EDT
[#4]
I didn't want to use a mag block, so mine's built off a QC10 large frame receiver set.
Sent the upper over to Ron Williams of RMW Extreme, and he cooked up a very nice little 7.5" DI setup. 
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Posted: 6/8/2017 11:50:17 PM EDT
[#5]
Quote HistoryQuoted:
upper is on sale at palmetto state armory, not sure if they have the mag block. |
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Posted: 6/9/2017 10:06:03 PM EDT
[#6]
Quote HistoryQuoted:
I didn't want to use a mag block, so mine's built off a QC10 large frame receiver set. Sent the upper over to Ron Williams of RMW Extreme, and he cooked up a very nice little 7.5" DI setup. http://i.imgur.com/gNGJ28Ag.jpg |
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Posted: 6/17/2017 3:16:50 PM EDT
[#7]
Quote HistoryQuoted:
Very nice |
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Posted: 6/30/2017 11:29:12 AM EDT
[#8]
I'm looking at buying or building a 8-9" AR45 set up that will be suppressed 95% of the time. Basically three options- PSA, CMMG, build my own.
PSA's 8.3" 45 pisto looks pretty damn good right now. Direct blowback, pistol upper and lower will run $750. Simply can't build it for that. The CMMG 8" AR45 set up is intriguing. CMMG's "Radial Delayed Blowback" operating system sounds like it should significantly reduce gas blow back when using a suppressor. At a retail of $1,300, it's not out of reach, but the extra $500 better come with a lot less gas in the face. Since it is relatively new to the market, I can't find any reviews of it being used with a suppressor. I'd really like to find a side by side of the CMMG being compared to a regular blowback version with a suppressor. Building one - Quarter Circle's lower would likely be used, but I would have a very hard time justifying the increased cost over the PSA offering right now. |
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Posted: 7/12/2017 5:16:06 PM EDT
[#9]
Quote HistoryQuoted:
I didn't want to use a mag block, so mine's built off a QC10 large frame receiver set. Sent the upper over to Ron Williams of RMW Extreme, and he cooked up a very nice little 7.5" DI setup. http://i.imgur.com/gNGJ28Ag.jpg Want to get a 10mm upper also. |
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Posted: 7/12/2017 6:05:56 PM EDT
[#10]
I've got the PSA .45 complete pistol. I had to have me a LRBHO so I snagged a spartan upper receiver from JoeBob and everything plays together pretty well.
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Posted: 7/12/2017 6:07:07 PM EDT
[#11]
The PSA is a straight blow back design, right? How does it shoot? Shot it with a suppressor?
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Posted: 7/12/2017 10:36:58 PM EDT
[#12]
Quote HistoryQuoted:
The PSA is a straight blow back design, right? How does it shoot? Shot it with a suppressor? Quote HistoryQuoted:
The PSA is a straight blow back design, right? How does it shoot? Shot it with a suppressor? IMO, the gun is a good starting point. It has more recoil than I'd expect and flings empty cases 20ft away. I wouldn't say its unusable the way it comes from PSA, but its a bit cumbersome. It benefits a lot from modifications to help control it like an arm brace, foregrip, and probably a different buffer/spring. I think a 8.3" barrel puts an AR at 26.7" OAL, so you can use a VFG without needing a stamp (haven't actually measured mine to verify that, though). Haven't gotten to shoot it suppressed yet. My .45 can's still in jail. 
Quoted:
Want to get a 10mm upper also. |
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Posted: 7/17/2017 12:22:05 PM EDT
[#13]
Quote HistoryQuoted:
I would have a very hard time justifying the increased cost over the PSA offering right now. DI .45 shoots a lot flatter. It's a night/day difference. |
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Posted: 7/21/2017 2:03:45 PM EDT
[#14]
Quote HistoryQuoted:
Yeah, PSA's is blowback. Mine runs 100% in the little bit I've gotten to play with it. I haven't had any malfunctions at all in ~350 rounds of wolf steel cased ammo. IMO, the gun is a good starting point. It has more recoil than I'd expect and flings empty cases 20ft away. I wouldn't say its unusable the way it comes from PSA, but its a bit cumbersome. It benefits a lot from modifications to help control it like an arm brace, foregrip, and probably a different buffer/spring. I think a 8.3" barrel puts an AR at 26.7" OAL, so you can use a VFG without needing a stamp (haven't actually measured mine to verify that, though). Haven't gotten to shoot it suppressed yet. My .45 can's still in jail. https://preview.ibb.co/nmstpa/Screen_Shot_2017_07_12_at_10_27_25_PM.png https://preview.ibb.co/cGev2v/Screen_Shot_2017_07_12_at_10_27_46_PM.png Definitely wanna get me a 10mm upper for this guy, too. I think its the next logical step for PSA. Hopefully they feel the same way :D Quote HistoryQuoted:
Quoted:
The PSA is a straight blow back design, right? How does it shoot? Shot it with a suppressor? IMO, the gun is a good starting point. It has more recoil than I'd expect and flings empty cases 20ft away. I wouldn't say its unusable the way it comes from PSA, but its a bit cumbersome. It benefits a lot from modifications to help control it like an arm brace, foregrip, and probably a different buffer/spring. I think a 8.3" barrel puts an AR at 26.7" OAL, so you can use a VFG without needing a stamp (haven't actually measured mine to verify that, though). Haven't gotten to shoot it suppressed yet. My .45 can's still in jail. https://preview.ibb.co/nmstpa/Screen_Shot_2017_07_12_at_10_27_25_PM.png https://preview.ibb.co/cGev2v/Screen_Shot_2017_07_12_at_10_27_46_PM.png Quoted:
Want to get a 10mm upper also. |
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Posted: 7/21/2017 3:13:48 PM EDT
[#15]
Quote HistoryQuoted:
Is your upper PSA? |
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Posted: 7/21/2017 8:02:50 PM EDT
[#16]
Quote HistoryQuoted:
I started with a complete pistol, so it had a PSA upper. I really wanted the LRHBO, so I snagged a stripped upper from joebob and moved the PSA barrel and handguard over to it. My PSA upper receiver is sitting in the spare parts bin now. Quote HistoryQuoted:
Quoted:
Is your upper PSA? I just replaced my handguard and found no pin on the barrel. Normal? |
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Posted: 7/21/2017 11:57:39 PM EDT
[#17]
I swapped my PSA 9mm and 45acp uppers at the same time. 1 of them had the indexing pin and one didn't. I don't remember which was witch. I don't think its a big deal. Not like there's a gas tube, gas block, or sight post on the barrel. There isn't any part of the chamber that needs to go upwards. As fas as I can tell, the only thing that determines which way needs to be up is the flash hider, which you can time after the barrel nut is torqued down and the barrel is locked in place.
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Posted: 7/23/2017 11:25:48 AM EDT
[#18]
I have a .45 D.I. from Rudy at Macon Armory.
Accurate, low recoil, very reliable. Dave N |
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Posted: 7/25/2017 9:26:00 PM EDT
[#19]
Quote HistoryQuoted:
I didn't want to use a mag block, so mine's built off a QC10 large frame receiver set. Sent the upper over to Ron Williams of RMW Extreme, and he cooked up a very nice little 7.5" DI setup. http://i.imgur.com/gNGJ28Ag.jpg |
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Posted: 7/25/2017 9:54:16 PM EDT
[#20]
https://maconarmory.com/collections/direct-impingement
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Posted: 7/28/2017 11:32:08 AM EDT
[#21]
Quote HistoryQuoted:
Specs? DI Upper was built by Ron at RMW Extreme. 7.5" with a 7" Samson Evo Keymod handguard. Built the lower with a standard LPK, minus the bolt catch and mag release which were already installed from QC10. Timney 3.5lb flat face trigger. SB Tactical PDW brace. |
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Posted: 7/28/2017 2:25:07 PM EDT
[#22]
Quote HistoryQuoted:
QC10 matched upper and lower set. DI Upper was built by Ron at RMW Extreme. 7.5" with a 7" Samson Evo Keymod handguard. Built the lower with a standard LPK, minus the bolt catch and mag release which were already installed from QC10. Timney 3.5lb flat face trigger. SB Tactical PDW brace. Quote HistoryQuoted:
Quoted:
Specs? DI Upper was built by Ron at RMW Extreme. 7.5" with a 7" Samson Evo Keymod handguard. Built the lower with a standard LPK, minus the bolt catch and mag release which were already installed from QC10. Timney 3.5lb flat face trigger. SB Tactical PDW brace. What is the length of the brace assembly? Does it all work smoothly? Thanks. |
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Posted: 7/28/2017 8:46:27 PM EDT
[#23]
 FosTech ECHO AR-II Trigger with CMMG MKG-45 by a skilled operator for demonstration purposely only. Check out this video from MAC 
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Posted: 7/29/2017 8:24:40 PM EDT
[#24]
Shoot a blow back .45 then shoot a DI .45 and you will break out in a stupid smile. The difference is amazing.
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Posted: 7/31/2017 10:04:55 AM EDT
[#25]
I just got a complete PSA 45 pistol lower and tried to slap my RMW 45 upper on but it does not fit. What are my options? Are each of the below accurate and all of the options?
1) Remove bolt catch from the lower then GTG? 2) Get a blowback carrier, keep bolt catch, and close gas port on the barrel? 3) Some way to mod the DI carrier to work? 4) Just buy a new complete PSA upper? What else? Thanks |
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Posted: 7/31/2017 10:45:24 AM EDT
[#26]
Quote HistoryQuoted:
Yeah, PSA's is blowback. Mine runs 100% in the little bit I've gotten to play with it. I haven't had any malfunctions at all in ~350 rounds of wolf steel cased ammo. IMO, the gun is a good starting point. It has more recoil than I'd expect and flings empty cases 20ft away. I wouldn't say its unusable the way it comes from PSA, but its a bit cumbersome. It benefits a lot from modifications to help control it like an arm brace, foregrip, and probably a different buffer/spring. I think a 8.3" barrel puts an AR at 26.7" OAL, so you can use a VFG without needing a stamp (haven't actually measured mine to verify that, though). Haven't gotten to shoot it suppressed yet. My .45 can's still in jail. |
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Posted: 7/31/2017 1:31:39 PM EDT
[#27]
Quote HistoryQuoted:
Not going to be over 26" with 8.3" barrel if you measure properly. https://www.ar15.com/forums/t_3_118/491773_Overall_Length_for_10_5_and_11_5_inch_ar_15s.html#i4572059 |
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Posted: 7/31/2017 6:58:37 PM EDT
[#28]
Quote HistoryQuoted:
Can I bother you for more pics? What is the length of the brace assembly? Does it all work smoothly? Thanks. It's been almost completely trouble-free, though. When I ordered the upper, I told Ron that I'd be shooting a lot of cheap steel-cased garbage when I'm out plinking. Not sure if he did anything out of the ordinary with the gas system, but it's definitely not picky about ammo. The weak link in an AR45 is the magazine. Every stoppage I've ever had with this gun has been magazine related. Weak springs, broken followers, out of spec feed lips, etc. |
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Posted: 8/10/2017 8:52:15 PM EDT
[#29]
Quote HistoryQuoted:
https://maconarmory.com/collections/direct-impingement |
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Posted: 8/11/2017 2:09:47 PM EDT
[#30]
Quote HistoryQuoted:
Not going to be over 26" with 8.3" barrel if you measure properly. Quote HistoryQuoted:
Quoted:
Yeah, PSA's is blowback. Mine runs 100% in the little bit I've gotten to play with it. I haven't had any malfunctions at all in ~350 rounds of wolf steel cased ammo. IMO, the gun is a good starting point. It has more recoil than I'd expect and flings empty cases 20ft away. I wouldn't say its unusable the way it comes from PSA, but its a bit cumbersome. It benefits a lot from modifications to help control it like an arm brace, foregrip, and probably a different buffer/spring. I think a 8.3" barrel puts an AR at 26.7" OAL, so you can use a VFG without needing a stamp (haven't actually measured mine to verify that, though). Haven't gotten to shoot it suppressed yet. My .45 can's still in jail. A pistol is measured from the end of the buffer tube to the muzzle (does NOT include brake/flash hider unless permanently attached). Arm braces do not count for measuring overall length. Example is my AR pistol with a 10.5" barrel: with a Kak Superbrace (long) buffer tube it measures 26.5" from end of buffer tube to end of muzzle. If I would have used a standard pistol buffer tube, I would have been under 26" OAL. A 11.5" barrel will get you over 26" OAL with standard pistol buffer tube but any barrel under 11.5" will not. Here are some pictures of my pistol with the superbrace buffer tube and pistol tube and carbine buffer tube above. I might be slightly off with the tape measure because I didn't take the flash hider off but it is close and will show that a standard pistol buffer tube and 10.5" barrel will be under 26" OAL. 
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Posted: 8/13/2017 12:52:50 AM EDT
[#31]
Just built a 8.3" PSA AR45 pistol with the SB PDW brace. Unfortunately, I used some ball ammo and brand new KRISS mags which evidently need to be broken in as it jammed and clearing jams SUCK... This combo is also pretty heavy, OAL is about 23"? Will try regular Glock mags at the next range session and see what happens.
WANTED: Aluminum MAG FUNNEL for it! Short mag well leaves a bit of slop for the mag to wiggle around, compounding the jamming issues... |
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Posted: 8/17/2017 8:42:18 PM EDT
[#32]
Sorry I missed this thread.....I am chained to the bench or a desk most days now..
 .....so I don't get to browse the forum as much as I'd like......we have blowback Bolt barrel and buffer combos on the website now and are gonna be doing a run of barrels somewhere between the 5 and 8.3 we have now. Even contemplating offering an 11 inch blowback as well. Just a note...our blowback barrels have been tested on all available Glock large frame lowers as well as with out mags and adapters, and run with out issue.
Have a new shipment of DI bolts inbound.......so we'll be building up our inventory in the near future.....and if you want a Glock lower...the new green swamp tactical run DI or Blowback uppers with a simple mag catch change, without having to mod the mag followers....and has a reliable LRBHO. Also got a little time today to try a 6 inch DI with the new mags and adapter. Initial test was a success......and I'm still working on some other things as well....just need the time and capital to finish development.....look for some new offerings this year...... If you haven't seen the website check us out at Macon Armory and if I can assist with a custom build...call us.....Pistol caliber is all I do.....
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Posted: 8/17/2017 8:55:12 PM EDT
[#33]
Quoted:
I just got a complete PSA 45 pistol lower and tried to slap my RMW 45 upper on but it does not fit. What are my options? Are each of the below accurate and all of the options? 1) Remove bolt catch from the lower then GTG? 2) Get a blowback carrier, keep bolt catch, and close gas port on the barrel? 3) Some way to mod the DI carrier to work? 4) Just buy a new complete PSA upper? What else? Thanks |
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Posted: 8/17/2017 9:25:24 PM EDT
[#34]
Posted Mad-Machinist:
Sorry I missed this thread.....I am chained to the bench |
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Posted: 8/18/2017 7:29:17 PM EDT
[#35]
Quote HistoryQuoted:
.If your lower is set up for a blowback system, you'll need to remove the ejector from the lower. DI has the ejector in the bolt face like a 5.56 Mag catch is an issue as well...It places the mag too high for DI and the mag angle is wrong for DI as well.....you'll have to sand the tips of the followers to keep it from hanging on the locking lugs of the bolt. Surprised someone didn't mention those little tidbits......  One of the reasons I insist on knowing what platform you plan to run before I sell a DI upper.....If you order just an upper off the website expect a call from me about that very thing to insure compatibility.
Give me a shout at the shop and I'll do what I can to get you running.......best bet is get a blowback upper for the PSA lower.....and get a Green Swamp Tactical lower for the DI upper....not sure if the one you have will run with it....but I have over 15,000 rounds down range with my uppers on GST lowers.,....no mag mods and I don't remember the last malfunction. |
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Posted: 10/4/2017 11:32:04 PM EDT
[#36]
Quote HistoryQuoted:
No need to remove bolt catch.......if it is causing a problem something is WAYYYYYYYYYY wrong Mag catch is an issue as well...It places the mag too high for DI and the mag angle is wrong for DI as well.....you'll have to sand the tips of the followers to keep it from hanging on the locking lugs of the bolt. Surprised someone didn't mention those little tidbits...... One of the reasons I insist on knowing what platform you plan to run before I sell a DI upper.....If you order just an upper off the website expect a call from me about that very thing to insure compatibility.
Give me a shout at the shop and I'll do what I can to get you running.......best bet is get a blowback upper for the PSA lower.....and get a Green Swamp Tactical lower for the DI upper....not sure if the one you have will run with it....but I have over 15,000 rounds down range with my uppers on GST lowers.,....no mag mods and I don't remember the last malfunction. Drove me nuts until I realized what was happening. 30 seconds with a dremel, and it's all good. |
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Posted: 10/5/2017 6:57:56 PM EDT
[#37]
@Mad-Machinist would you be able to use your DI system on a glock based lower?
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Posted: 10/5/2017 7:07:41 PM EDT
[#38]
Quote HistoryQuoted:
@Mad-Machinist would you be able to use your DI system on a glock based lower? Our blowback upper runs like a sewing machine and comes complete with the necessary buffer for the 45 We are hoping to offer lowers and complete guns in the upcoming year.....so stay tuned....
Rudy |
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Posted: 10/7/2017 2:59:58 PM EDT
[#39]
Quote HistoryQuoted:
Can I bother you for more pics? What is the length of the brace assembly? Does it all work smoothly? Thanks. Threw in a picture next to my P308 just for shits and giggles. The brace is an SB Tactical SBPDW. Collapsed length is right around 6.75" It's been super smooth, fairly reliable, and a very soft-shooting. Like I mentioned in another post, the only issues I've ever had were magazine related. 
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Posted: 10/7/2017 3:02:24 PM EDT
[#40]
I've had a Hahn mag block sitting in a CavArms lower for years. I don't even know if it is a viable solution any more.
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Posted: 10/16/2017 8:15:43 AM EDT
[#41]
MY PSA 45 RUNS GREAT BUT KICKS LIKE A MULE
ANY RECOMENDATIONS FOR BUFFER AND SPRING HOW MUCH TO CONVERT TO DI? I HAVE A BSFIII IN THE LOWER |
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Posted: 10/16/2017 12:49:00 PM EDT
[#42]
Quote HistoryQuoted:
I have a .45 D.I. from Rudy at Macon Armory. Accurate, low recoil, very reliable. Dave N I have shot both blow back and DI and the the BB kicked waaayyyy more than I ever thought a little 45acp could, the DI is like butter and the kick is next to nothing. |
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