The JP Enterprises JPBC-2A Full-Mass Bolt & Carrier is a precision-machined AR-15 bolt-and-carrier group built for smooth cycling, long service life, and dependable function. It uses an enhanced 9310-steel bolt and JP’s super-hard QPQ finish for maximum wear resistance and minimal friction, with a carrier that provides a 100% increase in bearing surface to reduce wear inside the receiver.
Key Features
Enhanced 9310-steel bolt for extended life versus standard mil-spec bolts
JP super-hard QPQ finish for maximum wear resistance and reduced friction
100% increased bearing surface for smoother cycling and reduced receiver wear
Full-mass carrier configuration designed to replicate normal carrier weight for duty-focused reliability
Complete bolt-and-carrier group includes extractor, firing pin, and all other components
Built for rifles that need consistent performance, this JPBC-2A full-mass group is a strong upgrade path for reliable AR-15 operation.
