Pivot and takedown pins with easy-to-grasp, oversized heads make separating upper and lower receiver halves fast and easy. Simply grasp the large, button-style head and disengage the pin?no fumbling for a punch and scratching the receiver. Pin shafts are designed to lock as securely as factory pins. Perfect for the shooter who mounts different top ends for different applications on a single lower receiver. Precision machined, heat-hardened steel with long-wearing mil-spec Parkerized finish.