I'm thinking of a pistol AR in 45acp,

[Hunter]

After resisting hard, any thoughts on a pistol AR, I find myself strangely attracted to the seedy underworld of 4 inch 45acp ARs. In large part because I got a complete lower in trade, kinda. It boiled down to take this New Frontier lower for what I owe you or I'll keep owing ya.

So, anyone have any suggestions for what I should top it with? It has the brace and takes glock mags. I like the idea of 4 in and maybe later on a can. But i have no experience with this kind of thing so I'm looking for advice......from the internet........SSRI's here I come.

[Crippledtrigger]

Will 10 mm glock mags fit n function? If so that's what I would do.

I've never owned a big glock but the mags might be the same. I'm sure if I'm wrong I will be corrected.

[Suck My Glock]

Will 10 mm glock mags fit n function? If so that's what I would do.

I've never owned a big glock but the mags might be the same. I'm sure if I'm wrong I will be corrected.

https://www.cmmginc.com/product/upper-g ... mk10-10mm/

[Suck My Glock]

After resisting hard, any thoughts on a pistol AR, I find myself strangely attracted to the seedy underworld of 4 inch 45acp ARs. In large part because I got a complete lower in trade, kinda. It boiled down to take this New Frontier lower for what I owe you or I'll keep owing ya.

So, anyone have any suggestions for what I should top it with? It has the brace and takes glock mags. I like the idea of 4 in and maybe later on a can. But i have no experience with this kind of thing so I'm looking for advice......from the internet........SSRI's here I come.

https://www.cmmginc.com/product/upper-g ... kg-45-acp/

[knockonit]

I began the collection and assembly of an ar in the pistol calibers, 9mm, .45 caliber,in a carbine version first, and did the pistol size, i found the smaller platform not to my liking, would rather utilize a pistol for this use. Carbines are fun to shoot for sure.
but do like the pistol calibers in a should held version, pleasure to shoot and not terribly expensive to run, especially if you shoot a lot
good luck, have a hoot making it run, as the pistol versions that i have been successful in and moved out, took some tuning to make reliable.
Rj

[Elk34]

Will 10 mm glock mags fit n function? If so that's what I would do.

I've never owned a big glock but the mags might be the same. I'm sure if I'm wrong I will be corrected.

Yes the ar glock lowers come in to sizes. Large mag well and small mag well. 10mm uses large mag well 40 cal. Bolt and 10mm barrel. 40 and 357 sig uses a small mag well, 40 bolt and there own barrels. They are easy as hell to build because of no gas system. I do thread and put a allen head bolt through the barrel nut into the upper reciever to keep it from ever backing off.

[YNOTAZ]

good luck, have a hoot making it run, as the pistol versions that i have been successful in and moved out, took some tuning to make reliable.
Rj

Amen brother. I built my 45acp before there were factory examples in that caliber. Getting the right combination of buffer weight and spring pressure cost me a lot of ammo, but it was fun.

Now there are a lot of factory combinations out there that can be used as a basis for a build.

[Hunter]

I thought about 10/40. But that means a new caliber to reload, dies, powder, trial and error. 45 I can do in my sleep and I already have a lot of 1911s

So what, I'm guessing you need more spring and heavy buffer? How much does barrel lenght effect things?

[Miker12]

The New LWRCI SMG-45 Pistol Caliber Carbine ($3K though)

[knockonit]

my goal is to have pistol caliber carbines, presently assembling a .45, and as the lower will accommodate the 10mm, will also do an upper for it.
lotsa options, so the experiment begins
Rj

[YNOTAZ]

Mine is a 10.5" barrel. I think RJ is building a 16" so we will see if length affects much. The biggest problem I had to overcome was feeding. Extraction and ejection always seemed to be fine, getting enough force behind the bolt to push the fat chick into the seat took some playing. With no gas to adjust it take away one tuning tool.

[Elk34]

https://www.joeboboutfitters.com/Kaw-Va ... r-10oz.htm

[knockonit]

hmm, trying to find the link to a buffer system that came with up sizing weights to figure out the need, i hate it when i hide crap from myself, once i find it will post it. friend advised me of this to figure out buffer needs for multiple units he was assembling

happy friday
Rj

[Hunter]

I saw that too, just can't remember where. Came with like three or four different weights and a range of 6 to 11 ounces?

[YNOTAZ]

Odin works has one.

https://www.odinworks.com/Adjustable_Bu ... os-abs.htm