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Old June 19, 2019, 03:47 PM   #1
44caliberkid
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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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Old June 19, 2019, 05:40 PM   #2
CDR_Glock
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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.


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Old June 19, 2019, 09:00 PM   #3
Hammerhead
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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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Old June 20, 2019, 03:49 PM   #4
sarge912
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needs a Franklin Binary trigger
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Old July 6, 2019, 12:27 AM   #5
HisSoldier
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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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Old July 6, 2019, 01:11 AM   #6
Aguila Blanca
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Quote:
Originally Posted by HisSoldier
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.
Ask, and ye shall receive

http://ballisticsbytheinch.com/45auto.html

http://ballisticsbytheinch.com/45auto2.html
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Old July 14, 2019, 01:59 AM   #7
silvermane_1
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Yeah that's not much of a gain in performance there Aguila Blanca.
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