Made with 8620 AISI steel and boasting a Mag-Phosphate finish, the Stern bolt fits into Mil-Spec upper receivers. It functions with Colt magazines and is relief cut to work with all other popular double stack to singe feed magazines"Glock,M&P and etc." It's fully compatible with standard AR15/M16 charging handles. Comes fully assembled with all sub-components installed, including firing pin/spring/retaining pin, extractor, and extractor spring. Also included in bolt assembly is a propriety center and roll pins.
- Made in U.S.A.
- Constructed from 8620 AISI steel.
- Custom 4140 billet extractor providing superior ejection.
- Glock cut.
- Coating: Mag-Phosphate
- Weight: 15.5 OZ with weight 13.3 OZ without.