: the bmp-2 infantry combat vehicle, fielded in the early 1980's,it is an improved version of the bmp-1 incorporating major armament changes. The new two-man turret mounts a 30-mm automatic gun with a long thin tube and double-baffle muzzle brake that can be used against aircraft and helicopters. The atgm launcher on top of the turret can employ either at-4 or at-5 missiles, though the at-5 spandrel canister is normally mounted. Given the enlarged turret, there are two roof hatches in the rear fighting compartment, rather than the four of the bmp-1, and the the bmp-2 accommodates one less passenger. Each side of the troop compartment has three firing ports with associated roof-mounted periscopes.

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