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

JP Enterprises AR-15 Variable Mass Operating System Bolt Carrier Group w/ 6.8 SPC / .224 Valkyrie EnhancedBolt For a complete operating system, this carrier pairs best with the JPSCS2-15H2. VMOS™ carriers use the same steel and tungsten weights as GEN 2 Silent Captured Spring units. Only the forward mass is reconfigurable. The rear steel mass cannot be exchanged. This carrier will not cycle with a standard buffer retainer plunger installed and should be used only with a Silent Captured Spring. Because our Law Tactical Folder Silent Captured Springs require use of a buffer retainer plunger to work, they are also not compatible with this VMOS™ bolt carrier. The JPBC-6 bolt carrier is full-auto capable when used in conjunction with other select-fire components. All NFA rules apply.

Material:	Stainless Steel
Finish:	QPQ Black