JP Enterprises, FMOS Full Mass Bolt Carrier Group w/JP EnhancedBolt, 308 Win/6.5 Creedmoor

Our full mass .308 carrier is designed to provide greater reliability in suppressed setups as well as SBRs and rifles without an adjustable gas system. Heavier than a standard DPMS LR-308 carrier, the JPBC-5 allows for the additional cycling delay required for reliable function in such setups.

This design incorporates forward assist serrations, making it compatible with both DPMS and Armalite rifles. Each carrier also includes out Enhanced Gas Ring for more reliable function.

Features (bolt carrier):

• Design prevents dust cover from closing when rifle not fully in battery
• Roller-burnished bore for frictionless operation
• Rock-hard QPQ finish provides remarkable natural lubricity
• Extremely smooth cycling with proper lubrication
• Increased bearing surfaces for slower wear and longer component life
• Longer Mil-spec cocking pad for optimal reliability
• Full-length forward assist serrations

Features (bolt):

• SAE 9310 steel construction for superior resiliency and extended lifespan
• DLC coating provides extreme surface hardness and lubricity while maintaining a ductile core
• Near frictionless surface finish
• Fully compatible with Mil-spec sub-components
• Increased diameter cam pin hole eliminates most common bolt breakages
• Improved lug geometry for reduced wear and easier locking/unlocking
• Enhanced Ejectormitigates head case extrusions and reduces brass smear
• Enhanced Extractoroptimizes extraction function and eliminates common ejection failures
• Enhanced Gas Ringreduced internal friction and carrier wear while maintaining near indefinite gas seal