SPRINCO AR-15 M4/M16 Enhanced Firing Pin Retaining Pin

This Enhanced Firing Pin Retaining Pin is made to MIL-W-13855 specifications to ensure reliable function for a long service life. The Pin is made of ASTM A313 17-7 PH Stainless Steel Moly Plated + Cryogenic Processed for 3X - 7X Normal Duty Cycle that has been heat treated and stress relieved, passivated, and precision tolerances. It is always important to have some backups and Sprinco USA has you covered. FEATURES / INFORMATION: Replacement AR-15 M4/M16 Firing Pin Retaining Pin Made to MIL-W-13855 standards Compatible to Mil-Spec Small Frame Bolt Carriers including 5.56, 300 AAC, 6.8 SPC, 6mm ARC, 6.5 Grendel etc. NOT compatible for .308, 6.5 CM or Other Large Frame Bolt Carriers Extreme duty cycles provided while maintaining performance specifications Made of ASTM A313 17-7 PH Stainless Steel Moly Plated + Cryogenic Processed for 3X - 7X Normal Duty Cycle Compatible accessories see under this article, accessories. _____________________________________________________________________________________________________________________________________________________________________________________________ General Informations The Sprinco Replacement Enhanced Firing Pin Retaining Pin is made from high quality material to produce long lasting durability. Standard for US military, recommended by professional gunsmiths.MADE IN THE USA