Original U.S. WWII 4.2” Chemical Mortar M5 Subcaliber Training Round - Inert

Original Item. Only One Available. The M5 4.2-inch mortar was a U.S. rifled 4.2-inch (107 mm) mortar used during the Second World War, the Korean War, and the Vietnam War. It entered service in 1943. It was nicknamed the "Goon Gun" (from its large bullet-shaped shells, monopod, and rifled bore) or the "Four-Deuce" (from its bore size in inches). In 1951, it began to be phased out in favor of the M30 mortar of the same caliber.

Unloaded or dummy grenades, artillery shell casings, and similar devices, which are cut or drilled in an BATF-approved manner so that they cannot be used as ammunition components for destructive devices, are NOT considered NFA weapons. This example is in total compliance and is totally inert. NOT AVAILABLE FOR EXPORT.

This is a lovely inert 4.2” chemical mortar training round, marked DUMMY on the wooden body. The round was made inert for training purposes. It measures 12½” long.

The round has no other markings we could find.

A great example, ready for further research and display!