- Large Frame .308/7.62 (DPMS pattern)
- FULL Mass Operating System (FMOS)
- Made from stainless steel
- Includes forward assist serrations
- Melonite QPQ (Quench Polish Quench) finish
The JPBC-5 is a premium bolt carrier for the DPMS patterned large frame rifles. The FULL Mass Operating System (LMOS) allows your rifle to cycle more reliably with hotter rounds or suppressed use versus a low mass bolt carrier. The Melonite QPQ finish and the enlarged bearing surfaces provide for a very smooth and reliable action. The bore of the JP stainless carriers has a roller burnished finish for friction-less operation with no chance of peeling chrome as in standard mil-spec carriers. The exterior bearing surfaces are hand polished. When properly lubricated, both systems make your rifle feel like it was cycling on ball bearings.
A note from JP Enterprises on 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 group 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 EnhancedBolt. Interchanging individual components will result in an unsafe configuration. Do not under any circumstances mix and match components between the platforms.
If a complete BCG is needed, check out the JPBC-5A
For more information on this item, visit JP Enterprises