Trigger & Hammer Pins for QMS / ACT

Trigger & Hammer Pins for the QMS / ACT triggers are improved over stock mild steel by using 4140 Chrome-Moly steel that has been quenched and tempered. Pins are centerless ground to a fine finish and a diameter 0.001” larger than stock mil-spec pins to reduce play in the trigger assembly while retaining a slip fit into the lower receiver.  These pins are finished with a durable black oxide coating.