staff vehicle. It is fitted with the YVI-2 digital communication system, a telescopic mast, the NSVT 12.7 mm heavy machine gun and additional armor. Fielded in 1994. BTR-50PUM – Upgraded BTR-50PU fitted with the equipment of the R-145BM (BTR-60 variant) and smoke grenade launchers, one NSVT 12.7 mm heavy machine gun and additional armor. BTR-50PUM1 – Modernized PUM with western radio sets. Indonesia BTR-50PM (Palawa Modification) – Indonesian Marine Corps BTR-50's modernized with BTR-2000 upgrade package from Nimda, Israel in 1990s. Fitted with AN/VRC-64 and PRC-33 radios instead of the 10-RT, new brake system, FN MAG machine gun instead of the PKT and a Detroit Diesel 6V92T engine instead of the original V-6V. BTR-50P(M) – Indonesian Marine Corps BTR-50's overhauled, reconditioned, and fitted with new fire extinguisher system by PT Lumindo Artha Sejati in 2019–2021. PAL-AFV (Armoured Floating Vehicle) – Upgraded version, developed by the PT PAL Indonesia in cooperation with PT Pindad. This vehicle has a new nose section, a raised rear hull section and powered by a 300 hp engine. Combat weight is 14,700 kg, with transport capacity is 3 + 14 troops. A model of the PAL-AFV was displayed at Indo Defence 2008. Photo Iraq BTR-50P – Converted into a self-propelled anti-aircraft gun (SPAAG) and armed with a Soviet 23 mm ZU-23-2 anti-aircraft autocanon. Fitted with additional armor around the engine decks to maintain its amphibious ability. BTR-50PK converted into a SPAAG armed with Czechoslovak twin 30 mm M-53/59 autocannons in an open-tub mount. Israel BTR-50PK fitted with a pintle-mounted 7.62 mm FN MAG machine gun in front of the commander's cupola. BTR-50PK armed with three pintle-mounted US M1919A4 .30 cal medium machine guns (one on the front of the superstructure and one on each side), another was pintle-mounted in front of the commander's cupola. Poland OT-62 TOPAS (OT-62 stands for Obrněný Transportér vzor 62 – "Armored Personnel Carrier model 62") ("TOPAS" stands for Transportér Obrněný PÁSový – "Tracked Armored Personnel Carrier") – A series of BTR-50 variants developed jointly by Poland and Czechoslovakia. They are similar to the BTR-50PK but have hatches in the hull sides, a more powerful PV-6 engine giving 300 hp (224 kW) and two projecting bays in front of the superstructure instead of one like similar looking BTR-50PU (however the bays are different from one another in terms of shape). Serbia BTR-50S (2005) – An upgrade package for the BTR-50PK offered by