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

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: Manufacturer: JP Enterprises Color: Black Gun Frame Size: Small Package Contents: JP Enterprises Vmos AR-15 Variable Mass Bolt Carrier For Small Frame