I have built many AR's, 5.56, 7.62x39, and 6.8, But I have never Built a .45 ACP, and I have a customer that wants one, so any Help, info, or Pic's would be greatly appreciated.

All I Know so far is : OLY Upper that uses Modefied UZI Mags and a standerd lower , or Cav-Arms lower with a block of some kind that uses M3 Grease Gun Mags.

Do they use a standard AR-15 Hammer ?

What would be best ?

Thanks for any help.

Anyone ?

Standard Hammer I believe.  We are working on one over on weaponeer.net

Wow, 90 reads and one post.

Thanks BM59_Fan, I like The BM59 also.

I have an ar in .45.  It uses modified uzi mags.  I have tried the oly upper on several different lowers just to see if it works and it did so I believe it uses a standard hammer.  Also Hi cap uzi mags are very difficult to come by and very expensive.  Somewhere on this site is a thread that discusses a coversion to Sten mags to work.  I'm working with a machiniest (SP) to come up with some options.  I like using the converted mags  that allows the standard mag release to work.  Send me an email and I'll give you my contact who built this gun, he's a great guy.

E-Mail Sent.

No need to change anything on the lower with the OLY.
Whatca gonna build? You can get a complete rifle from OLY unless you have something special in mind. Magazines are the issue (high capacity) with OLY.  9MM is not a problem and the new model OLY that takes Glock mags in 9 and 40.

Cav Arms is suppose to have a lower that will take Grease gun mags.
I have been toying with the idea of 38 Super or 10MM but have put that on the back burner since high cap mags are a problem. I don't want to tinker.

I think I am going with a .45 OLY 11.5 Upper, and a Cav-Arms lower, so I can use Grease Gun mags.

Looks like I will need a Heavy bufer, and a mag block from Han.

I have the Cav lower with the Oly upper and it rocks.

The mag block can be had at Brownell's and you need to use Slash's heavy buffer.

Take a look in the Cav forum.