guns. The weight of the vehicle increased from 9.8 tonnes to 10.2 tonnes. It was also known under the designation BTR-60PK, where K stands for krisha – "roof" and GAZ-49A. BTR-60PA-1 (1965) – Upgraded BTR-60PA with improved power plant and transmission and the R-123 radio instead of the R-113. The weight of the vehicle increased from 10.2 tonnes to 10.3 tonnes. It entered service in very small numbers. BTR-60PA converted into a command vehicle equipped with two side-mounted angled telescopic masts. MTP-2 (MTP stands for mashina tekhnicheskoj pomoshchi) – BTR-60PA converted into a technical support vehicle based on the BTR-60PA. It is equipped with a crane mounted on the front of the hull. While in transport, the crane is carried on the left-hand side of the vehicle. It's also fitted with several stowage boxes, two on the roof behind the front hatches, one smaller on the front of the right-hand side of the hull and two over the engine decks. It is also missing two or three hand rails. BTR-60PAI (1965) – Initial version with the DShK 1938/46 12.7 mm heavy machine gun replaced by the conical BPU-1 turret from the BRDM-2, which is armed with the KPVT 14.5 mm heavy machine gun and the PKT 7.62 mm coaxial tank machine gun, on the top of the vehicle. The turret is placed over the second axle. The two remaining mountings for 7.62 mm machine guns on the upper hull sides were removed. Since the turret has been added, the crew had increased from two to three (commander, driver, and gunner). There are two semicircular hatches for the crew in front of the turret. The vehicle carries 500 rounds for the KPVT 14.5 mm heavy machine gun and 3,000 rounds for the PKT 7.62 mm coaxial tank machine gun. BTR-60PB (1966) – Improved sighting system for 14.5 mm KPVT heavy machine gun and improved GAZ-49B engine. The turret was modified to include a new telescopic sight, the 14.5 mm KPVT heavy machine gun and the 7.62 mm PKT coaxial light machine gun were moved to the right, while the telescopic sight was mounted coaxially to the left. The armour protection has also been improved. The frontal armour of the BTR-60PB can withstand fire from 7.62 mm bullets from any range, while the rest of its armour can withstand fire from 7.62 mm bullets from 100 m. It has a filtration and