The Armaspec AR9 Firing Pin is precision-engineered from 17-4 stainless steel and features H900 hardening treatment for superior durability and reliable performance.Armaspec AR9 Firing Pin17-4 stainless steel construction for corrosion resistanceH900 hardened for enhanced durability and longevityStainless steel finishDesigned specifically for AR-9 platform firearmsThis premium firing pin delivers consistent ignition performance while withstanding the demands of regular use making it an excellent upgrade or replacement component for AR-9 builds and maintenance.