The JP Enterprises JP Low Mass Bolt Carrier for Large Frame .308 delivers a precision-tuned AR-308 operating system with a stainless steel bolt carrier finished in a durable QPQ black coating for reliable performance under demanding conditions. This JP Low Mass design reduces reciprocating weight while maintaining strength, contributing to smoother cycling and faster lock times in the Large-Frame (.308) platform. Includes the JP Enhanced Gas Ring to promote consistent gas sealing and optimal suppression of gas blowback, enhancing reliability across a variety of ammunition and rifle configurations. Constructed for AR-308 compatibility, this bolt carrier requires a DPMS-pattern bolt firing pin and cam pin to ensure secure, accurate fitment within your upper receiver and bolt assembly. At 10.82 oz with key installed, it strikes a careful balance between reduced mass and durability, helping to improve control during rapid follow-up shots. The combination of stainless steel composition and CPQ-inspired finish provides corrosion resistance and a clean, low-friction surface for firmware-free operation. Ideal for shooters seeking enhanced cycling efficiency and dependable performance in large-frame applications, this bolt carrier is a robust upgrade for AR-308 builds demanding reliability and long service life.