Reduced-weight bolt/carrier assembly helps tame felt recoil on a JP or DPMS or Remington AR-style .308 rifle (LR-308 pattern only). Carrier features the same type of weight-reducing cuts found on the original JPBC-3 AR-15 bolt carrier to give the same benefits your .308. Wide carrier rails have extra bearing surface to improve bolt alignment and reduce wear. Carrier key is already installed and staked. Available with QPQ or polished stainless finish. 

JP Low Mass Operating System Bolt Carrier- Large-Frame (.308). Stainless Steel. QPQ Black Finish. Requires DPMS-pattern bolt, firing pin and cam pin. Weight: 10.82 oz. with key installed. Finish: QPQ Coating.

Compatibility-

This notice pertains to any rifle based on the large-format AR-10-type or LR-308 platform typically chambered in .308 Winchester, 7.62x51 NATO or other cartridges requiring the longer magazine format.

Be aware that these receiver platforms are not standardized like the AR-15/M16 platform for which most parts are cross-compatible. Before ordering accessories and parts for your large-format rifle, make sure the parts are compatible with your particular platform. This bolt carrier is compatible only with the DPMS family of AR-10 products.

With the Armalite/Rock River family of large-frame receivers, this carrier can only be used as a complete bolt carrier assembly group with a DPMS-pattern bolt such as our .308 JP Enhanced Bolt. Interchanging individual components will result in an unsafe configuration. Do Not under any circumstances mix and match components between the platforms.