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June 19, 2019, 03:47 PM
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#1 |
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Senior Member
Join Date: May 15, 2017
Location: Iowa
Posts: 1,098
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45 ACP AR Pistol Build
Showing off my newest little monster. It is an AR-15 pistol in 45 ACP. It has a Palmetto slick side upper that I enlarged the ejection port on. A Wilson 10.5 inch barrel with an Aero handguard. MVB Industries magazine well adapter that uses H&K carbine magazines, although I'm using ProMag mags. The bolt is from JSE Surplus but is not identified by manufacturer. Brownells pistol buffer tube and a KAK industries buffer and spring, SIG arm brace. Bushnell red dot. Mil-Spec lower parts kit of unknown origin. Most of the parts were ordered from JSE on sale, around Christmas time.
I was anticipating a troublesome performance but it feeds and fires just fine. One inch groups at 25 yards and only slightly larger (1.25 to 1.5 inches) at 50 yards using 230 grain hardball. I occasionally get a misfire from a light primer strike, because these have a spring loaded return on the firing pin to prevent slamfires. I believe maybe cutting a coil off the return spring or installing an extra strong hammer spring will fix that. |
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June 19, 2019, 05:40 PM
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#2 |
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Senior Member
Join Date: September 30, 2010
Posts: 704
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Great build.
I have an atheris4    I use an SBA Tactical SBA3 Pistol Brace with a Law Tactical Folding Adapter. I have a Primary Arms Advanced Micro Dot. Sent from my iPhone using Tapatalk Pro |
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June 19, 2019, 09:00 PM
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#3 |
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Senior Member
Join Date: May 31, 2004
Location: Minnesota
Posts: 2,432
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Excuse me gentlemen, but you seem to be having too much fun, I'm going to have to confiscate those.
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June 20, 2019, 03:49 PM
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#4 |
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Member
Join Date: May 18, 2019
Location: Beautiful Parma Ohio
Posts: 70
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needs a Franklin Binary trigger
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July 6, 2019, 12:27 AM
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#5 |
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Senior Member
Join Date: August 9, 2007
Location: Oregoncoast
Posts: 1,793
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I wonder what the difference is between the velocity of that over a 5" stock 1911. I recently cut 1" from the barrel of a 1911 I had considered threading for a suppressor, the ten shot average came down 10 FPS, I expected more like 50.
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CNC produced 416 stainless triggers to replace the plastic triggers on Colt Mustangs, Mustang Plus II's, MK IV Government .380's and Sig P238's and P938's. Plus Colt Mustang hardened 416 guide rods, and Llama .32 and .380 recoil spring buttons, checkered nicely and blued. |
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July 6, 2019, 01:11 AM
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#6 | |
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Staff
Join Date: September 25, 2008
Location: CONUS
Posts: 18,459
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Quote:
http://ballisticsbytheinch.com/45auto.html http://ballisticsbytheinch.com/45auto2.html |
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July 14, 2019, 01:59 AM
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#7 |
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Senior Member
Join Date: November 6, 2011
Location: Burien,WA
Posts: 897
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Yeah that's not much of a gain in performance there Aguila Blanca.
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Rugers:SR1911 CMD,MK 3 .22lr 6",Sec. Six '76 liberty .357 4",SRH .480 Ruger 7.5",Mini-14 188 5.56/.233 18.5", Marlins: 795 .22lr 16.5",30aw 30-30 20",Mossberg:Mav. 88 Tact. 12 ga, 18.5",ATR 100 .270 Win. 22",S&W:SW9VE 9mm 4",Springfield:XD .357sig 4", AKs:CAI PSL-54C, WASR 10/63, WW74,SLR-106c |
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