FV101 Skorpion 30 (not a misspelling)
This is the FV101 Scorpion rearmed with the Soviet Shipunov 2A42 30mm automatic cannon.
The 2A42 is 100kg lighter than the FV101's standard L23A1 76mm gun and produces about half the recoil force: 5,100kg vs 16,500kg for the standard 76mm.
It is the standard weapon taken from wrecked BMP-2s:
"A stabilized 30 mm 2A42 autocannon with dual ammunition feeds, which provide a choice of 3UBR6 AP-T and 3UOR6 HE-T / 3UOF8 HE-I ammunition. The gun has a selectable rate of fire, either slow at 200 to 300 rounds per minute or fast at 550 rounds per minute. This gives a continuous fire time of 100–150 seconds (or only 55 seconds, depending on the rate of fire chosen) before running out of ammunition. The original stabilization provides reasonable accuracy up to a speed of about 35 kilometres per hour."
500 rounds are in a basket fixed to the floor of the turret basket. The weapon is infamous for the amount of fumes it puts into the turret and two high volume fans have been placed in the turret roof. Even so, firing the weapon at its full rate of fire often has the crew leaving their hatches open. Normally the weapon is only fired in short bursts.
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