.45 ACP. 19" barrel length (Including compensator). SN: 949. Blued metal finish overall with finned barrel, Cutts pattern compensator, and mounting walnut furniture with pistol grip forend. Simple blowback operated semi-automatic rifle mounting adjustable rear ladder and front blade sights. Comes in an unmarked shipping box with a note from Numrich Arms advertising their then new production 40-shot drum magazines, Auto Ordnance owner's manual, and Department of the Treasury letter copy affirming that the Auto Ordnance Model 1927A1 does not classify as a machine gun. Also included are one 20-shot magazine, one 30-shot, and one 40-shot drum.