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120-mm M256 (USA)

Country of Origin: USA


The Rheinmetall-designed 120-mm M256 smoothbore tank gun is the main armament for the German Leopard 2 and U.S. M1A1 Abrams main battle tanks. The gun has a cold-drawn, seamless tube with a chromium inner lining that improves wear resistance while firing fin-stabilized ammunition.

The gun tube's effective full charge (EFC) life was originally set at 500 rounds, but upgrades extended the life to 750, and later, to 1,000 EFC rounds. Later variants extended the EFC life to 1,500...

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