The KNS Precision PERMA Pin is a must-have upgrade for your AR-15 bolt carrier. This drop-in replacement is machined from tool steel for a long-lasting, reliable solution. It replaces the standard cotter pin found in the bolt carrier and is designed to retain the firing pin as in original Stoner rifles. This pin has a black finish and provides a fast and easy replacement to the often frustrating task of reassembling your BCG. It is an essential upgrade for any AR-15 owner and is sure to make maintenance and reassembly much simpler.
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