Stern Defense Nickel Boron 9mm Complete Bolt Carrier Group - SD BU9 NiB ECHO

Made with 8620 AISI steel and boasting a NIB finish, the Stern Defense bolt fits into Mil-Spec and Glock-pattern upper receivers. It functions with Colt SMG, Glock magazines and 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. Stern's 9mm bolts incorporate a new bolt design which caters to single stage triggers with short resets. It also allows use with the JP silent capture spring. This bolt is compatible with the Law Tactical folding stock and the Echo trigger.Made in the USAConstructed from 8620 AISI steelCustom 4140 billet extractor providing superior ejectionWeight - 15.5 oz with, weight 13.3 oz withoutCompatible with single stage short reset triggersCompatible with the law folding tactical stockCompatible with the Echo triggerCompatible with the JP silent capture spring