Your Browser is OutdatedQ&A for Stern Defense AR-15 16.1 inch Assembled .45 ACP Upper Receiver w/15 inch MLOK Rail — 9 Questions & 9 Answers
Yes. The Stern Defense AR-15 16.1 inch Assembled .45 ACP Upper Receiver features last round bolt hold open. The bolt is made with 8620 AISI steel and boasting a Mag-Phosphate finish, the Stern bolt fits into Mil-Spec and Glock-pattern upper receivers. It functions with Colt SMG, Glock magazines and it's fully compatible with standard AR15/M16 charging handles.
Yes. The Stern Defense AR-15 16.1 inch Assembled .45 ACP Upper Receiver features last round bolt hold open. The bolt is made with 8620 AISI steel and boasting a Mag-Phosphate finish, the Stern bolt fits into Mil-Spec and Glock-pattern upper receivers. It functions with Colt SMG, Glock magazines and it's fully compatible with standard AR15/M16 charging handles.
The .45 ACP requires a heavier buffer when used with a carbine spring. The manufacturer recommend using an 11 oz. buffer.
Yes, this would work with the C-45 lower receiver from New Frontier.
Yes, this will be compatible with the FM-45 lower receiver.
Stern Defense sells a conversion block to allow glock mags to be inserted into a mil-spec ar-15 lower. I have no experience with it yet but the general online opinion is that they work pretty well. It would likely be better to get a lower that is designed as a 45 acp lower but if thats not an option that conversion kit should work fine.
No, this will not be compatible with the C-9 since this is a .45 ACP upper. You would need the New Frontier C-45 lower receiver.
Yes, this will be compatible.