Adams Arms Piston Kit

Adams Arms P Series Micro Adjustable Block Piston Kit - Low Mass Carrier

…45 mm NATO. Kit includes: * Patented One-Piece Bolt Carrier * P Series Micro Block - Adjustable (5 Settings - 100%/74%/53%/32%/11%) * Upper Receiver Bushing * Bushing Installation Rod * Bolt Spring * Drive Rod with Bushing and Spring * Installation Instruction Card The Adams Arms Piston System: * A…