SOLD I bought this as a new take out from ARFCOM a while back. I was told it was CMMG. No markings so I can't be certain. The carrier has some machining marks, so it's not the smoothest finish. Still good for a truck gun or for spare parts. I put about 50 rounds through it to make sure it fired. Decided I wanted a super smooth nitride BCG instead. $60. Pick up in Seattle or priority mail for $6 extra.