AR15 Forums banner
1 - 3 of 3 Posts

Discussion Starter · #3 ·
also can you put a pistol upper on a regular lower?

No, that makes it a short barreled rifle and must be registered.
Any caliber that will fit in the mag can be fit into the action. DPMS has a list of several caliber conversions that they offer.
1 - 3 of 3 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.