bigger fuel tanks to increase the maximum operational range. Installing a new and advanced electrical system including an advanced control panel and the replacement of all internal and external lighting. Increasing the driver's field of view by installing a rearview camera with an LCD screen. Improving the man-machine interface. The vehicle is armed with a pintle-mounted M2 heavy machine gun in the front and a second machine gun of a smaller caliber mounted on a "ring" in the rear. The rear machine gun is controlled from the inside, using the "ring" to move and can rotate a full 360°. The vehicle also has two whip antennas in the front part of the superstructure. The modernization can also be applied to the BTR-70. Mexico APC-70 – Turret-less APC used by the Mexican marines, based on a civilian variant of the BTR-60 without firing ports, periscopes and with additional bulletproof windows. Armament consists of a single machine gun (either the Heckler & Koch HK21 or FN MAG-58 7.62) or a Mk 19 grenade launcher. It is also known under the designation BTR-60PB-MX. APC-70 fitted with an A-frame crane. People's Republic of China BTR-60PB copy designed through reverse engineering. Poland BTR-60PB fitted with an additional radio set. BTR-60PB modified by the MSW automobile plant for use during the martial law in Poland by ZOMO fitted with a two-sided breaker, weighing 1.5 tonnes, mounted to the front of the vehicle and a counter weight mounted to the rear of the vehicle. The breaker itself is made out of rail tracks and a dozen mm thick plate. It also has an additional protection on the OU-3 infrared searchlight as well as aerial seatbelts for the driver and commander. Romania TAB-71 series (TAB stands for transportor amfibiu blindat – "amphibious armored carrier") – Romania was the only other country to produce the BTR-60PB. When the Army of the Socialist Republic of Romania explored the possibility of license-producing the BTR-60PB in the late 1960s, the Soviets consented, probably to preempt further collaboration between Romania and the "heretic" Yugoslavs. TAB-71 – The initial turretless version, entered production in 1970. It was essentially a BTR-60P with two Romanian 140 hp engines instead of the regular 90 hp engines. This version was produced in small numbers. TAB-71M – Occasionally called TAB-72. This was a version of the BTR-60PB with a modified turret and uprated engines. The sole external difference between