JP Enterprises AR-15 Full Mass Operating System Bolt Carrier Group w/ 6.8 SPC / .224 Valkyrie EnhancedBolt

Give your factory rifle and upgrade with the JP EnterprisesA(R) AR-15 Full Mass Operating System Bolt Carrier Group w/ 6.8 SPC / .224 Valkyrie EnhancedBolt. The bolt is also constructed with SAE 9310 steel with a corrosion-resistant finish for unparalleled strength and durability. Compatible with Mil-Spec AR-15 rifles. includes a proprietary bolt design and is the perfect upgrade to standard Mil-Spec bolt carrier groups (BCG). The bolt carrier boasts SAE 9310 stainless steel construction and a corrosion-resistant DLC coating for long-lasting durability and strength. The increased diameter cam pin hole eliminates most common bolt breakages while improved lug geometry offers reduced wear and easier locking/unlocking. The enhanced ejector mitigates head case extrusions and reduces brass smear while the enhanced extractor optimizes extraction function to eliminate common ejection problems. Plus, the enhanced gas ring reduces internal friction, as well as carrier, wear while maintaining a near-indefinite gas seal. NOT for use with AR-10s.