THE BASIC PRINCIPLES OF COLT SMG UPPER RECEIVER

Posted by Yukon58 on 1st May well 2023 I chose to go using this 16” upper for my Colt reduced once the fiasco Using the atf pistol brace ruling. I wasn’t likely to fluff about so I went all Colt and am glad I did.It is actually a typical FSB and no I had no challenges sighting it in. I at first created it with a DPMS A2 upper receiver before ob