Evolution Gun Works GI Barrel Bushing Straight .577 Carbon Steel Blued Finish. I. Barrel Bushing is a reliable part that will look good in your gun. This Evolution Gun Works GI Barrel Straight Bushing is used to make the frames of rifles or shotguns fit with a standard barrel bushing when accuracy is the prime concern. The EGW straight GI gun barrel bushing is a original blued part that is machined to exact tolerances to ensure a proper lockup. The EGW GI Gun Work's barrel bushing was a GI military part issued to the US Armed Forces during WWI. If you need a GI replacement gun barrel bushing or just want to improve your gun then the Evolution Gun Works GI Gun Barrel Bushing is a reliable part that will work well. Specifications for Evolution Gun Works GI Barrel Bushing Straight: Manufacturer: Evolution Gun Works Finish: Blued Gun Model: Colt 1911 Government 5in 1911 Commander 4.25in Package Contents: Evolution Gun Works GI Barrel Bushing Straight What firearm models does the manufacturer say Evolution Gun Works GI Barrel Bushing Straight is compatible with? The manufacturer says that Evolution Gun Works GI Barrel Bushing Straight is compatible with 1911 Commander 4.25in Colt 1911 Government 5inEvolution Gun Works 14511: Barrel Bushing GI Straight .577 Carbon Steel Blued Finish