Rock Island 22 TCM 9mm Firing Pin. Our TCM Firing Pins are precision machined using our CNC Swiss turning centers. The Titanium Firing Pin are made from Grade 6 Titanium which has an Ultimate Tensile Strength of 140,000 psi. Titanium is 40% lighter than your standard grade of steels thus giving you a faster lock time. Titanium is also Corrosion and High Temperature Resistant to help eliminate galling, fretting and seizing. All Titanium Pins are shipped with material certification sheets. Made in the USA!!