Serbia is developing new 120 mm mortar bombs for local use and export sales, all of which are for 120 mm smooth bore mortars that are already manufactured in the country.
The bombs can be used with the 120 mm M74 towed mortar system manufactured by Serbia’s Namenska Special Products Factory and sold externally by Yugoimport-SDPR.
The first of these new 120 mm mortar bombs is the NMM-120 guided mortar round (GMR), which has a maximum range of up to 9 km, depending on the mortar it is fired from, according to the Facility of Mechanical Engineering at the University of Belgrade, which is developing the mortar.
The complete GMR weighs 15.5 kg – of which 2.9 kg is the high-explosive (HE) content (RDX/TNT or TNT) – and it has an overall length of 800 mm.
The NMM-120 GMR is claimed to have a 10 m circular error probable (CEP). It has a nose-mounted guidance/fuze module that corrects the path to the target in the final phase of the flight. The nose-mounted fuze can be set for impact or proximity mode.
Serbia is also developing a rocket-assisted (RA) 120 mm mortar bomb that would have a maximum range of up to 15 km, according to the Facility of Mechanical Engineering. The rocket nozzles are located towards the end of the main body of the mortar bomb.
Total weight is quoted as 19.83 kg, of which 1.65 kg is HE, and the mortar bomb has an overall length of 888 mm. It is fitted with a nose-mounted UTU M93 P1 fuze and has a maximum muzzle velocity of 307 m/s, according to Yugoimport.
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