Evolution Gun Works Melt Barrel Bushing Officer's .693in Carbon Steel Blued Finish. s bushings are machined from solid barstock steel.The flange thickness is .125? which protects the barrel more because it sticks out farther than the spec bushing.It is also better support for Their angle bore and more aesthetically pleasing.The Officer?s bushings are pre-bored and sized to fit officer?s model they apons.Available in Melt or Carry Bevel.Available in Blue or Stainless Steel.I.D. = Inside diameter of yTheir slide .764?.O.D. = Outside diameter of yTheir barrel .693?. Specifications for Evolution Gun Works Melt Barrel Bushing Officer's: Manufacturer: Evolution Gun Works Gun Model: Colt 1911 Officer Additional Features: .693 in Condition: New Package Contents: Evolution Gun Works Melt Barrel Bushing Officer's What firearm models does the manufacturer say Evolution Gun Works Melt Barrel Bushing Officer's is compatible with? The manufacturer says that Evolution Gun Works Melt Barrel Bushing Officer's is compatible with Colt 1911 OfficerEvolution Gun Works 14411: Barrel Bushing Officer's Melt .693 in Carbon Steel Blued Finish