Fusion Firearms 1911 40 S&W UMG Pistol Barrel 6 Inch Standard Bull Stainless Steel 1911-BBL-1-224. The manufacturer says that Fusion Firearms UMG Barrels 6 Inch is compatible with 1911Fusion Firearms 1911-BBL-1-224: 1911 40 S&W UMG Pistol Barrel 6...