Quick view Kns Push Btn Pivot Pin Qd Ar15 Black KNS Precision, Inc. Log in for pricing This small-hole receiver pivot pin, designed for quick and easy removal, fits the AR-15 platform. The pin is .250" in diameter and made of steel. This pivot pin has a spring-loaded push button. When... Log in for pricing Quick view Qty in Cart: 0 Price: Log in for pricing Subtotal: