Original Item: Only One Available. This is a wonderful example of a repainted M21 Anti-Tank practice mine, complete with deactivated M607 pressure fuse and tilt rod. The mine is in great condition aside from the OD green repaint and does have some minor denting, consistent with service use. The body of the mine measures 8 1/4" in diameter by 4", and the tilt rod is 21 inches in length.

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 NOT AVAILABLE FOR EXPORT.

The M21 is a circular United States anti-tank landmine that uses a Misznay Schardin effect warhead. The mine uses an M607 pressure fuse, which can be adapted as a tilt rod fuze. The mine is triggered either by pressure, or by the tilt rod being forced beyond 20 degrees from the vertical by a force of more than 1.7 kg, either of these actions results in pressure being transferred via a bearing cap to a Belleville spring, which inverts, driving the firing pin into the M46 detonator. The M46 charge first ignites a black powder charge, which blows off the mine's cover, and clears any earth or debris that may have been on top of the mine. A fraction of a second later the main warhead detonates, driving and compressing a steel plate upwards, with enough force to penetrate 76 mm of armor at a distance of 530 mm. Approximately 200,000 M21 mines were produced in the U.S. and licensed copies, the K441 and K442, were produced in South Korea.

Comes more than ready for further research and display.