.45 Super AR pistol build

You might be better off going with 45 Win Mag, or at least 460 Roland there bernie.

Why not go directly to the .458 socom if the you want more power than what the .45 ACP unless this a project that you want to do just because you can.

...WANT not NEED is what America is all about. ..... Gabe Suarez

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barnetmill said: ↑
Why not go directly to the .458 socom if the you want more power than what the .45 ACP unless this a project that you want to do just because you can.

bernie said:

The reason that I want to use the .45 Super is that I want to stay with a straight walled pistol round.

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The straight wall mags

I would want it to run off of Glock mags.

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I am sure that someone, somewhere has done what you want to do. Good luck with it and may the first set up that you put together run well without the need of additional tweaking.

Blowback AR's are hard on components when shooting 150PF factory 9mm. I predict you're going to break a lot of stuff on this gun if you get it built.

ATLDave said:

Blowback AR's are hard on components when shooting 150PF factory 9mm. I predict you're going to break a lot of stuff on this gun if you get it built.

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I suspect there may be some way of getting enough wt for a blowback. But a more powerful .45 loading makes it more difficult and such ammunition is expensive.
I have decided I want to set up for myself an AR pistol that will duplicate .44 magnum pistol ballistics and I will look into a the .300 blackout with 200-220 grain hollow point bullets at a supersonic 1300 fps. i am looking for pistol decibel levels relative to my hearing. I think op would like to have .45 caliber bullets up to 1,000 fps or faster. I think a locked breech gas operated gun is the best way for going that route.
But likely there is someone out there that has figured out a way with tungsten to make a super heavy buffer wt. suitable for the OP.

CMMG makes the "radial lock" that could handle.45 +P, don't know if they would "rate" it for .45 Super.
https://cmmginc.com/product/barrel-and-bcg-kit-5-4140cm-sbn-45acp/

Jim Watson said:

CMMG makes the "radial lock" that could handle.45 +P, don't know if they would "rate" it for .45 Super.
https://cmmginc.com/product/barrel-and-bcg-kit-5-4140cm-sbn-45acp/

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It is a delayed or retarded blowback and just might work. I would still use the heaviest buffer wts available to go with it.

Radial Delayed Blowback Bolt (Patent Pending)

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Such systems have been around for more than a century.

https://cmmginc.com/9-arc/