JP Enterprises Vmos AR-15 Variable Mass Bolt Carrier For Small Frame JPBC-6H Color: Black, Gun Frame Size: Small, $16.75 Off w/ Free Shipping

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.

Patent Pending

Weight: 10.7 oz.

Features:

Enhanced tunability of operating system

Guaranteed reliability of difficult configurations

Overcomes all fouling build-up

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 cocking pad for optimal reliability

Additional forward assist serrations for one full inch of travel

Specifications for JP Enterprises Vmos AR-15 Variable Mass Bolt Carrier For Small Frame:

Package Contents:

• JP Enterprises Vmos AR-15 Variable Mass Bolt Carrier For Small Frame