EXHIBIT#12 USA

M1 57-MM ANTI-TANK GUN

By 1941, it became apparent to the U.S. Army that its 37mm anti-tank gun would be inadequate for operational service and the quickest way to get an operational gun in service was to build a copy of the British 6-pounder. In February 1941, the British drawings were converted to suit American production methods and the result was the 57mm anti-tank gun on carriage M1. Although the new gun didn’t quite have the velocity of the 37mm anti-tank gun, its larger shell was still powerful enough to penetrate close to three inches of armor, enabling the M1 to take out all light tanks and most medium tanks serving in the German Army. The carriage differed mainly in having a wheel operated traverse, but it was gradually modified, first by fitting combat tires to produce the M1A1, and then by reverting to the British shoulder-operated free traverse to produce the M1A2. The carriage M1A3 was a further change, incorporating towing eye changes. The 57mm gun was widely used throughout WW2, but its main importance was as a self-propelled gun supplied under Lend-Lease to both the British and Soviet armies.

DATA

Length: 9 ft, 9 inches

Traverse: 90 degrees

Weight: 2,700 lbs

Muzzle Velocity: 2,700 ft per second

Armor penetration: 2.7 inches at 1,000 yds.