Foxtrot Mike's Complete 45acp AR15 Upper, 16" barrel. $400 Shipped.

[arakboss]

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[fstdraw]

Do you need a detected lower?

 

[arakboss]

Do you need a detected lower?

Yes something like this:

Spartan-45ACP Glock Magazine Compatible Billet Lower Receiver

Spartan-45ACP Glock Magazine Compatible Billet Lower Receiver

www.joeboboutfitters.com

Or this one:

https://www.wolfpackarmory.com/product-page/ar45-lower-receiver-gen-ii

Or this one:

Welcome to Delta Team Tactical - Unbeatable Prices on the Best Tactical Gear

Or a mag insert like this:

MAG-ADMP45

THIS MUST BE USED WITH A 11 OUNCE BUFFER OR HEAVIER WHEN USING A CARBINE SPRING. CLICK HERE FOR BUFFER45ACP UPPERS MUST HAVE AN ENLARGED EJECTION PORT.CLIC...

getstern.com

 

[Rvr350]

What is the advantage to 45acp in ar15 platform? At 16" barrel, is it still aubsonic at the business end?

 

[arakboss]

What is the advantage to 45acp in ar15 platform? At 16" barrel, is it still aubsonic at the business end?

No advantage I am aware of. Just another cartridge option for the most versatile firearm platform on the planet.

 

[TTSX]

What is the advantage to 45acp in ar15 platform? At 16" barrel, is it still aubsonic at the business end?

I've never heard of a 230 grain .45ACP bullet going super sonic in any barrel length. It's an excellent cartridge for suppressors.

 

[UNO]

You can shoot some suuuuuper hot 45super loads and get well beyond 44mag power. This would be a fun setup. I have a 185gr 45 super load that is pushing 1480fps (900ft/lbs) and a 230gr load going about 1250fps. And that's out of a 5" barrel

 

[arakboss]

You can shoot some suuuuuper hot 45super loads and get well beyond 44mag power. This would be a fun setup. I have a 185gr 45 super load that is pushing 1480fps (900ft/lbs) and a 230gr load going about 1250fps. And that's out of a 5" barrel

In the AR platform? If so how heavy of a buffer are you using?

 

[UNO]

In the AR platform? If so how heavy of a buffer are you using?

Oh no no. Sorry that's out of my 5" 1911. But out of a 16" barrel I'd imagine you'd add a couple hundred fps at least.

 

[arakboss]

Oh no no. Sorry that's out of my 5" 1911. But out of a 16" barrel I'd imagine you'd add a couple hundred fps at least.

What mods did you make to your 1911. I have some 45 super brass and would like to try it someday maybe in one of my Tisas 1911s

 

[UNO]

What mods did you make to your 1911. I have some 45 super brass and would like to try it someday maybe in one of my Tisas 1911s

You should! Always use 45 super brass. Starline says it's 460 rowland brass cut down. So in theory if your gun can handle it and you have good chamber support you can get close to 460 rowland numbers.
I did a 24lb recoil spring and a shock buffer from Wilson combat. Cost me like $35 shipped. I'm using 45 super brass with a 185gr nosler JHP over 12.0gr of power pistol for the 900ft/lbs load. I worked up from about 10grs and still don't see any over pressure signs. I don't wanna go any higher without a compensator though to slow the slide down a bit. Makes one hell of a fireball

 

[arakboss]

You should! Always use 45 super brass. Starline says it's 460 rowland brass cut down. So in theory if your gun can handle it and you have good chamber support you can get close to 460 rowland numbers.
I did a 24lb recoil spring and a shock buffer from Wilson combat. Cost me like $35 shipped. I'm using 45 super brass with a 185gr nosler JHP over 12.0gr of power pistol for the 900ft/lbs load. I worked up from about 10grs and still don't see any over pressure signs. I don't wanna go any higher without a compensator though to slow the slide down a bit. Makes one hell of a fireball

View attachment 1811998

What pressure signs are you looking for?

 

[UNO]

What pressure signs are you looking for?

Flat primers, primer flow, case head bulge. Haven't noticed anything yet. I am using S&B large primers which don't have a pistol or rifle designation that I can see. They seem to be working phenomenally though.

 

[NWShooter44]

Please for the love of god stay away from FM .45 products. So many issues with them

 

[arakboss]

Another lower option.

D163 - Dirty Bird DB45 AR-45 Stripped Billet Lower Receiver - AR15Discounts

The DB45 Billet Lower Receiver is an ideal choice for starting your pistol caliber (.45 ACP/10mm) AR build. Precision machined from a solid block of 7075-T6

ar15discounts.com

 

[arakboss]

Welcome to Delta Team Tactical - Unbeatable Prices on the Best Tactical Gear

Use code February2024 to save 7% off of this upper or pretty much any other items they sell.