JPBC-EB308 : BOLT ASSEMBLY COMPLETION GROUP, .308, DLC FINISH

JP EnhancedBoltT

• Fully compatible with Mil-spec .223 and standard .308 subcomponents
• Superior SAE 9310 material for superior resiliency and extended lifespan
• Additional material around cam pin hole to eliminate inherent weak point of bolt design
• Improved lug geometry for reduced wear and easier locking/unlocking
• JP Enhanced Ejector design mitigates case head extrusions and reduces brass smear
• JP Enhanced Extractor optimizes extraction function and eliminates multiple common ejection failures
• JP Enhanced Gas Rings reduce internal friction and wear of the bolt carrier while maintaining gas seal longer

Whether we want to admit it or not, the good old Mil-spec bolt has had a good run, but it's long past its retirement age, and the JP EnhancedBoltT is there to pick up where it left off.

Material matters, and the Carpenter 158 steel of the standard Mil-spec bolt is suboptimal for such a high-load application leading to a life expectancy of only about 6,000 rounds. In fact, standard bolts will start to show stress cracks on the locking lugs adjacent to the extractor cut after only 3,000 rounds while cracking at the cam pin hole and weak extractor spring tension only add to the problems of the Mil-spec bolt. Fine enough for its time, the material used in these standard bolts is simply not the best choice by today's standards.

The SAE 9310 of the JP EnhancedBoltT is a superior steel alloy in virtually every way compared to the C-158, whether in its resistance to structural failure or life expectancy, both of which far exceeding the Mil-spec. Just as with the transmission gears for Formula 1 racers which are also made from 9310, the operational demands of a bolt assembly are ideally suited to this state-of-the-art material, with actual full-auto endurance torture tests prove it.

Beyond its material advantages, the design of the JP EnhancedBoltT boasts many other advantages, including the addition of material around the cam pin hole to eliminate this inherent weak point of the bolt design itself. Each bolt also comes assembled with our proprietary Enhanced Ejector, Enhanced Extractor (.308 and Grendel) and Enhanced Gas Rings for improvements in every subcomponent. Yet even with these advanced components, all EnhancedBoltsT (excepting our .308 high pressure model, for obvious reasons) are fully compatible with the readily available Mil-spec subcomponents, including a standard configuration extractor-all the benefits of a state-of-the-art proprietary platform with none of the inconvenience.

JP EnhancedBoltT Bolt Assembly Completion Group

• Caliber: .308 Win.
• Finish: Chromium Nitride

Kit includes bolt assembly, firing pin, cam pin and retainer pin. This version of the bolt is compatible with the JP LRP-07 and the DPMS LR-308 platforms (or clones thereof) only and cannot be used to replace bolts in the Armalite AR-10 platform (or clones thereof).