Armaspec Firing Pin AR-9 SS. Specifications for Armaspec Firing Pin: Manufacturer: Armaspec Color: Stainless Country of Origin: USA Features of Armaspec Firing Pin Coming Soon Package Contents: Armaspec Firing Pin What firearm models does the manufacturer say Armaspec Firing Pin is compatible with? The manufacturer suggests that Armaspec Firing Pin is compatible with AR-15 AR-9 AR-10Armaspec ARM682-SS: Firing Pin AR-9 SS