JP .308 Complete Bolt Carrier Group
  • JP .308 Complete Bolt Carrier Group

JP .308 Complete Bolt Carrier Group

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JPBC-4A Stainless Steel Low Mass Bolt Carrier, complete with bolt, for .308 - Complete bolt carrier assembly with JPBC-4 .308 Low Mass Carrier and JPEB-308 JP EnhancedBolt™ with cam pin, firing pin and firing pin retainer.

The JPBC-4 AR-10 low mass stainless bolt carrier is also finished in black QPQ hard coat for superior wear and natural lubricity. The JPBC-4 will also improve the sight recovery on the DPMS LR-308 or the Armalite AR10. However, it must be used with a DPMS LR-308 bolt assembly, firing pin, cam pin and firing pin retainer.

Do not attempt to use the JPBC-4 with the Armalite bolt assembly, firing pin or cam pin. Unlike the AR-15/M16 platform on which just about everything is cross compatible, each AR-10 type rifle such as the JP LRP-07, DPMS LR-308, Armalite AR-10, Knights SR-25 or Rock River AR-10 is inherently different with only limited cross compatibility of components. Always check compatibility anytime you order aftermarket accessories for AR-10 type rifles.


BC-4A Bolt Carrier Assembly Group AR-10 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. The JPBC-4A complete bolt carrier assembly and its parts are compatible with the DPMS family of AR-10 products.

With the Armalite/Rock River family of large-frame receivers, this assembly can only be used as a complete bolt carrier assembly group. Interchanging individual components will result in an unsafe configuration. DO NOT under any circumstances mix and match components between the platforms. Only use the complete JP bolt carrier assembly in the Armalite/Rock River platforms. 

 

JPBC-4SPA - special polished low mass bolt carrier group assembly for .308 with JP enhanced bolt completion kit.   

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