Armaspec AR9 Firing Pin Features The Armaspec AR9 Firing Pin is machined from 17-4 stainless steel a material chosen for its combination of strength toughness and corrosion resistance in a part that endures constant impact. H900 hardening further refines the pin s mechanical properties increasing its resistance to wear and deformation over thousands of firing cycles. This level of heat treatment helps ensure consistent primer strikes shot after shot supporting reliable ignition in an AR-9 build. A silver finish reflects the natural stainless steel surface making wear and any potential damage easy to spot during inspection. Built specifically to fit AR-9 pattern firearms this firing pin is a direct replacement for worn damaged or broken factory pins. Because firing pins experience significant repeated stress upgrading to a hardened stainless steel pin like this one can extend the service life of the bolt carrier group as a whole. Armaspec s focus on precision machining and proper heat treatment reflects the same attention to detail found across their broader lineup of AR components. For AR-9 owners performing routine maintenance or troubleshooting a reliability issue this firing pin offers a dependable straightforward fix. Armaspec AR9 Firing Pin Specifications Manufacturer: Armaspec Model: AR9 Firing Pin Material: 17-4 Stainless Steel Finish: Stainless Steel H900 Hardened Color: Silver Compatible Hosts: AR-9 Available At: GrabAGun