The Wilson Combat Bullet Proof Firing Pin is precision-engineered for .45 ACP applications with a durable titanium finish for enhanced performance and longevity.Wilson Combat Bullet Proof Firing Pin (SKU 336).45 ACP caliber specificationPremium titanium finish constructionCompatible with 1911 Government and Officers frame sizesPrecision manufactured for reliable ignitionDesigned for serious shooters who demand consistent performance and durability from their 1911 platform firearms.