D-56T

The 76.2 mm D-56T series rifled tank gun is the tank gun used on the PT-76, which is the only known armoured vehicle to carry it.

Description
It has an effective range of approximately 1,500 meters and a rate of fire of six to eight rounds per minute. This gun is 42 calibers long. A typical ammunition load consists of 24 x OF-350 Frag-HE, 4 x sub-caliber AP-T, 4 x AP-T and 8 x BK-350M HEAT rounds. The gun is mounted in an oval dish-type circular truncated cone turret with flat sloping sides which is mounted over the second, third, and fourth pair of road wheels. All PT-76s have a fume extractor for the main gun at the rear of the turret. Some were fitted with a multi-slotted muzzle brakes. The PT-76 is typically fitted with the D-56T gun with double-baffle muzzle brake and a bore evacuator towards the muzzle.