Original U.S.WWII U.S. Army Type E-3 Aerial Gunnery Trainer by Mac Glashan Air Machine Gun Corp. - Browning M1919A4 Air Gun Simulator Antique Cartridge Firearms with the a stamped brass

with the a stamped brass single piece box with stamped slot

one man could easily carry it in rough country with the Number 2 mortarman carrying the ammunition

The cap is in excellent condition

All we know is that it was used on a vehicle in WWI

with just a bit of service wear

Original U.S.WWII U.S. Army Type E-3 Aerial Gunnery Trainer by Mac Glashan Air Machine Gun Corp. - Browning M1919A4 Air Gun Simulator Antique Cartridge Firearms with the a stamped brassOriginal Item: Only One Available. According to the Beeman Blue Book of Airguns, the Mac Glashan Air Machine Gun Corp was formed in July 1939 and closed in November 1943. Manufactured in the early 1940's, these BB machine guns were used during WWII for aerial gunnery training. The manufacturer, model, and serial number are marked on a small rectangular plaque affixed to the left side of the gun. TRAINER AERIAL GUNNERYTYPE E 3 SERIAL NO. 42