Fusion Firearms 1911 9mm UMG Pistol Barrel 6 Inch Wilson/Nowlin Bull Stainless Steel 1911-BBL-1-237. The manufacturer says that Fusion Firearms UMG Barrels 6 Inch is compatible with 1911Fusion Firearms 1911-BBL-1-237: 1911 9mm UMG Pistol Barrel 6...