Kns Precision, Inc. Sig 556 Pushbutton Pivot Pin

Pushbutton-release pin replaces the factory pivot screw and nut at the front of the receiver to enable quick, separation of the SIG 556 upper and lower receivers with finger pressure only. Three, spring-loaded detent balls hold the pin in place and prevent wear or binding in the pivot hole or receiver hole when removed. Black oxide finish matches the receiver; stainless steel internal parts resist corrosion. Mfg: Kns Precision, Inc. SPECS: Steel, black oxide finish.