barndweller
Member
I have a old colt AR 15. I got it back in the early 90's. It was after the first ban and before the second. I got a 300 Blackout upper today. The bolt is not notched out like my old Colt. It was notched to go by the block on the lower to keep it from being full auto.
Would I be safe using the Colt bolt on the CMMG Blackout upper? A friend told me he would not.
Would I be safe using the Colt bolt on the CMMG Blackout upper? A friend told me he would not.