7.62x39, 7.5" Heavy Barrel, 1:10 Twist, Pistol Length | Parkerized. Comes with barrel extension and extension pin installed. This barrel
also has the gas port hole pre-drilled. Barrel extension has the m4
feedramps.
Made from 4150 CMV hardened to 26-32 rc and stress relieved. 1-10 rh twist.