Tactical Precision Manufacturing TPM AR-15 Enhanced Titanium Firing Pin Titanium OSFA. The Titanium AR 15 Firing Pin is made from Grade 6 Titanium which has an Ultimate Tensile Strength of 140000 psi. Titanium is 40percent 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. Specifications for Tactical Precision Manufacturing TPM AR-15 Enhanced Titanium Firing Pin: Manufacturer: Tactical Precision Manufacturing Color: Titanium Gun Make: AR Platform Gun Model: AR-15 Package Contents: Tactical Precision Manufacturing TPM AR-15 Enhanced Titanium Firing Pin What firearm models does the manufacturer say Tactical Precision Manufacturing TPM AR-15 Enhanced Titanium Firing Pin is compatible with? The manufacturer suggests that Tactical Precision Manufacturing TPM AR-15 Enhanced Titanium Firing Pin is compatible with AR-15Tactical Precision Manufacturing FP-AR15-TI: TPM AR-15 Enhanced Titanium Firing Pin Titanium OSFA