TSMB M-25

History

The TSMB M-25 is a heavy 203mm self-propelled mortar developed by Serbia's Military Technical Institute. Its design is based on solutions from the 155mm M-65 howitzer, a Yugoslav version of the American M114. The system was presented at the Partner 2025 defense exhibition in Belgrade in September 2025. On October 21, 2026, Serbia's Ministry of Defence published the first footage of the TSMB M-25 firing, in material dedicated to the development of Serbia's national defence industry. The Ministry did not specify when the firing tests took place or report their results.

Specifications

The TSMB M-25 is a short-range artillery system designed to launch heavy effectors. Its main armament is a 203mm gun-mortar with a barrel length of 24 calibers and an automated loading mechanism. The system is characterized by high accuracy at ranges of 6 to 12 km. A claimed rate of fire of up to three rounds per minute has not yet been confirmed in testing. The high level of automation supports rapid "shoot and scoot" operation for enhanced survivability on the modern battlefield.

The vehicle is mounted on a FAP 2026 three-axle 6×6 wheeled all-terrain chassis with a ballistically protected armored cabin for a crew of four. The vehicle mass is approximately 19 tons. The fire control system comprises an inertial navigation system, a ballistic computer with dedicated software, a radio device, and a gunner's computer. Elevation ranges from 0° to 75° and horizontal traverse covers ±23.5°. The vehicle can travel at speeds up to 80 km/h with an operational range of approximately 600 km.

The effector set includes high-explosive and concrete-piercing (bunker-buster) shells with a mass approximately 2.5 times that of a standard 155mm howitzer shell and an explosive charge about four times larger, using latest-generation thermobaric explosive compositions. The standard 203mm shell mass is approximately 100 kg, of which approximately 27 kg is the explosive charge. The system can also fire extended-range rocket-assisted projectiles and can be equipped with a Precision Guidance Kit (PGK) to enable effective fire missions with a small number of rounds, even a single round, before leaving the firing position.