WW2 Japanese Knee Mortar Round INERT

The WW2 Japanese Knee Mortar Round INERT is an original, deactivated ordnance artifact from the Second World War. This type of round was designed for use with the Type 89 grenade discharger, commonly referred to as the “knee mortar” by Allied forces, although intended for use on the ground and not the knee. The round typically features a cylindrical body, a fuze mechanism at the nose, and tail fins for stabilization during flight. Measuring approximately six inches in length, this example has been rendered completely inert in accordance with safety standards, containing no explosive material or live components. Items such as this served a significant role in infantry support, allowing Japanese forces to deliver explosive ordnance at short to medium ranges. As a representative artifact of Japanese military technology during the 1930s and 1940s, it offers insight into the development and tactical application of portable mortar systems in the Asia-Pacific theater.