JP RIFLES | Tungsten Weight for Silent Captured Spring/VMOS Carrier
Designed to replace one or more of the existing weights of the JP Silent Captured Spring or VMOS™ Bolt Carrier, these tungsten weights are the standard components used for reciprocating mass in the operating system. To ensure compatibility with your unit, verify that you have a GEN 2 Silent Captured Spring unit. The guide rod of the first generation SCS is stainless while the GEN 2 rods are bronze. VMOS™ carriers use the same masses as the GEN 2 Silent Captured Springs.