1911 45acp Titanium Firing Pin, 70 Series. Our 1911 Titanium firing pins are also made from Grade 6 Titanium which is nearly 40% lighter than standard steel pins which gives them a faster lock time. This will help minimize the risk of accuracy usually compromised by weapon movement before the firing pin hits the primer. Made in the USA!! Length 2.255 Nose diameter 0.09.