Fusion Firearms 1911 40 S&W UMG Pistol Barrel 6 Inch Wilson/Nowlin Bull Stainless Steel 1911-BBL-1-225. The manufacturer says that Fusion Firearms UMG Barrels 6 Inch is compatible with 1911Fusion Firearms 1911-BBL-1-225: 1911 40 S&W UMG Pistol...