|JP VMOS Bolt Carrier
QPQ Black Finish
Cycling problems? The VMOS brings the discipline your rifle needs.
For difficult setups like suppressed rifles and exotic caliber chamberings, some degree of mass regulation is required for optimal performance. This is especially true in the absence of an adjustable gas block. Residual gas and excessive fouling can grind your rifle to a stop.
One size never fits all when it comes to gas-operated rifles. The Variable Mass Operating System (VMOS) carrier ensures reliability through additional reciprocating mass but provides more custom tunability. Combined with our Silent Captured Spring, multiple masses are exchangeable to perfectly tune your operating system weight.
Package includes carrier, Enhanced Gas Ring and instruction sheet.
For a complete operating system, this carrier pairs best with the JPSCS2-15H2.
Weight: 10.7 oz.
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. Standard buffer/spring components must be installed "loose" or replaced with a Silent Captured Spring.
The JPBC-6 bolt carrier is full-auto capable when used in conjunction with other select-fire components. All NFA rules apply.
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