Quarter Circle 10’s new Adjustable Pistol Caliber Buffer Assembly sets a new standard for buffers. Adjustable for use with most pistol caliber carbines, suppressed or un-suppressed, 9MM, .40 S&W or .45ACP, the quick change weight management provide optimum reliability in multiple configurations. The Package Includes: 4 aluminum weights, 4 steel weights, 4 tungsten weights, 4 […]