Fits all AR-15 lower receivers with Mil-Spec .250" diameter front pivot and rear takedown pin holes. The enhanced takedown pin and pivot pin are CNC machined from round stock steel bars and case hardened. Low profile pin heads are ambidextrous safety compatible. An added tip length noticeably aids in starting/pushing the pins out from the left side of the receiver. A cone shaped recess at both pin tips prevents accidental bullet or tool slip. Kit includes two KNS hardened stainless steel detents, two 17-7 nickel plated stainless steel pin springs and a high-strength neodymium magnet for hassle free installation. MADE IN THE U.S.A.
NOTE: The enhanced pivot pin is NOT compatible with the AX556 receiver due to the receiver's proprietary design (enhanced takedown pin will work). May not be compatible with the KNS anti-walk sear pin without modificaiton to the sear pin.