machine gun like in BTR-60PA instead of the 7.62 mm machine gun. The vehicle carries 500 rounds for the DShK 1938/46 12.7 mm heavy machine gun and 3,000 rounds for 7.62 mm machine guns. BTR-60P converted into a command vehicle equipped with a rail-type antennae running around three sides of the hull top. BTR-60P M1961/1 – BTR-60P converted into a fire support vehicle. It is fitted with the turret from the PT-76 amphibious light tank. Most probably prototype only. BTR-60P M1961/1 fitted with a smaller version of the PT-76 turret. Most probably prototype only. BTR-60P M1961/2 – BTR-60P converted into a fire support vehicle. It is fitted with a small open-topped turret armed with a 37 mm gun with clean barrel with conical flash-hider. Most probably prototype only. BTR-60P converted into a mortar carrier. It can carry up to two mortars, along with their crews and ammunition. MTR-2 – BTR-60P converted into a repair vehicle with a raised tarpaulin cover over the troop compartment running almost to the rear. BTR-60PA (1963) – This version has an armoured roof over the troop compartment. It is fitted with improved 'closed-down' vision devices for the crew. Behind the commander's and driver's hatches is a single rear-opening rectangular hatch in front of which is a single mount for the DShK 1938/46 12.7 mm heavy machine gun between the two circular crew hatches at the front of the personnel compartment and two optional mounts for 7.62 mm machine guns (either the PKT, the SGMB or the PKB tank/medium/general-purpose machine guns) on each side of the roof of the personnel compartment. Early production BTR-60PAs only had a single mount for the 7.62 mm machine gun between the two circular crew hatches at the front of the personnel compartment. The small doors on each side of the hull that were present in the BTR-60P were removed. The BTR-60PA introduced collective NBC protection system to the series. It has six handrails on the each side, in rows of three. The personnel compartment has two rectangular hatches. The fact that the roof has been added makes passengers more vulnerable to enemy fire while they're exiting the vehicle through the top hatches. Also, the gunner must be at least shoulder high out of the vehicle to operate the weapons. The vehicle carries 500 rounds for the DShK 1938/46 12.7 mm heavy machine gun and 3,000 rounds for 7.62 mm machine