For sale is a new 1911 .45 Stainless Steel compensator. Replaces the barrel bushing. MADE IN USA!!! Fits any USGI based 1911. We also have this part in Black oxide in the eBay store. This compensator replaces a standard 1911 barrel bushing and was made to the government print so you will not have any fitment issues. This compensator fits 5 inch full size Government model guns, any caliber provided your barrel O.D is .579 This will not work on a 4 inch gun, will not work on an officers etc. This will not fit a 9mm / 38 super with a .500 barrel either.