Fusion Firearms 1911 40 S&W UMG Pistol Barrel 6 Inch Clark/Para Threaded Stainless Steel 1911-BBL-1-217. The manufacturer says that Fusion Firearms UMG Barrels 6 Inch is compatible with 1911Fusion Firearms 1911-BBL-1-217: 1911 40 S&W UMG Pistol...