ALPHA Standard Nitride 7.62x39 BCG
Compatible with 7.62x39 ammo. Standard .125" bolt face depth.
- Mag Phos Extractor
All other major components have been nitride QPQ treated. Nitride treatment adds a layer of 70 RC hardness and lowers friction. 9310 MPI tested bolt & 8620 steel carrier. Bolt designed to allow deeper firing pin penetration for use with steel cased ammo.