Evolution Gun Works Officer's Mainspring Housing Cap 6aL4v Titanium. Each of these Evolution Gun Works Pistol Parts are machined from carbon steel to be one of the toughest components on the market. And thanks to the resistance of the steel the Evolution Gun Works Officer's Mainspring Housing Cap can be used time and time again. It's an excellent addition to your cleaning supplies or emergency reserve since you never know when a pin will go missing. For a great way to celebrate a successful hunt choose the Evolution Gun Works Officer's Mainspring Housing Cap. Specifications for Evolution Gun Works Officer's Mainspring Housing Cap: Manufacturer: Evolution Gun Works Gun Make: Colt Gun Model: Colt Officer's ACP Condition: New Package Contents: Evolution Gun Works Officer's Mainspring Housing Cap What firearm models does the manufacturer say Evolution Gun Works Officer's Mainspring Housing Cap is compatible with? The manufacturer suggests that Evolution Gun Works Officer's Mainspring Housing Cap is compatible with Colt Officer's ACPEvolution Gun Works 10181: Officer'sTitanium Main Spring Housing Cap 6aL4v Titanium