7.62x39 AR15 build
Im fairly new to this and would appreciate any advice given.
I bought an upper without bolt or carrier group from a friend of mine. The barrel is 7.62x39 but i have no clue what brand it is. C M is stamped on the carry handle of the upper and theres C 5 on the gas block/front site. wandering if anyone could give me some insite to what i have.