Hi Folks,
Apologies if this has been covered, but I was unable to find much up-to-date information of who is manufacturing AR lowers and uppers in 10mm.  I would prefer to use Glock 20 magazines and something like a 12 or 14" barrels, but I am flexible on that.

I have seen the Banshee™ 200, Mk10, 10mm and its nice, but I would rather build my own.  I have built several ARs, so I the build at least wouldn't be new to me.

Can anyone pass along some links or companies that are making dedicated lowers and uppers for 10mm?

Thanks for any help!

Topic Moved

I know you want to build your own, but other than budget, there’s no reason to not go with the CMMG radial delay vs. a straight blowback.

Rudy @ Macon Armory (MadMachinist here, not sure on spelling) does a DI 10mm upper...

Came to post this as well +1

Joe Bob Outfitters makes a good upper and parts to build on,, plus, it charges on the upper reciver so you can use a short barrel without getting your hand cose to the muzzle.
I bought one and put together a 45 acp and love it with a 4" barrel

If the CMMG is still killing brass on the 10mm model, as a reloader that makes it a "No Go".

May be the same builder/modder mentioned above, but I've seen two documented attempts. I can only find one saved link (magnum not auto), so I can't specifically outline if they were two looks at one attempt.

But take a look https://www.pirate4x4.com/threads/ar-project-10mm-magnum.807061/page-2

In successful cases, cutting out the lower central lug from the barrel was the path to getting flat nosed lead to chamber. Interestingly, either doing this didn't occur to, or they thought it would be better if they didn't, the crew at Teppo Jutsu. Wanting to get 10mm to load in a stock barrel extension eventually led to Teppo fitting a .338 spitzer bullet into slightly necked down 10mm brass, which birthed 300AAC's bigger, clandestine brother--338 Spectre.

Also
https://www.ar15.com/forums/armory/10mm-carbine/48-503238/
https://www.gunsamerica.com/digest/thureon-defense-10mm-carbine-pcc-review/

HAWT