Military Museum Sofia, Bulgaria
Produced in the Soviet Union and since 1955 used by the Bulgarian navy for defence against low flying aircraft, helicopters and light armoured sea and coastal targets. Consisted of 2 anti aircraft 14,5mm machineguns KPVT M 1944 with a launchers weight of 325 kilo and machineguns weight of 52,5 kilo. Manned by 2 men. Fire rate 600 rounds/minute and with a range of 2 (air targets)-3,5 (land targets) kilometres