MaRG 155-BR

The MaRG 155-BR is a family of 155 mm caliber self-propelled multi-terrain mounted gun system (MGS) developed by an Indian private company Kalyani Strategic Systems Limited (KSSL), a subsidiary of Bharat Forge for the Indian Army as parts of Atmanirbhar Bharat, and Make in India initiative. The artillery gun is mounted on a 4x4 High Mobility Vehicle.^[6][7] The MaRG family supports 39, 45 and 52 caliber guns.^[8]

With its independent suspension, automated gearbox, and tire pressure adjustment system, the MaRG family can operate efficiently on challenging terrain, including slopes up to 30 degrees.^[9]

The Bharat ULH 155-mm/39 caliber (Ultra-Light Howitzer), created by Kalyani Strategic Systems, serves as the basis for the MaRG 155-BR, also known as the TS-20. Three versions of the ULH were created using various structural materials for the carriage and recoil devices: titanium (weight 4.8 tons), steel (all steel, total weight 6.8 tons), and mixed (Advance Hybrid). Based on the steel version of the ULH, the artillery unit was placed on the MaRG 155-BR. The four-by-four-wheel self-propelled vehicle is based on the Ashok Leyland Mark 4 military truck and has a five-person armored cabin. It has a contemporary fire control system installed.^[11][12]

On the advice of Indian Chief of Defence Staff Bipin Rawat, MaRG 39 was developed by Bharat Forge. At DefExpo 2020, it was showcased for the first time. Mounted on a 4x4 BEML-Tatra chassis, the 7.8 tonne, 155 x 39 mm lightweight howitzer is known as the truck-mounted MaRG-Steel. With an overall weight of 18 tons, the system is developed for high altitude terrain like Ladakh and Arunachal Pradesh, where it has proven logistically challenging to deploy heavy artillery. The Ilyushin Il-76, and Boeing C-17 Globemaster III are capable of airlifting the MArG. One MaRG MGS can be flown by the IL-76, and the C-17 can airlift two MaRG MGS.^[8]

Bharat Forge unveiled the Multi-terrain Artillery Gun (MaRG) 155-BR on 21 December 2021, in front of Indian Chief of the Army Staff General MM Naravane, and the Defense Minister Rajnath Singh.^[13] The MaRG 155-BR is one of the few 155mm/39 caliber gun systems installed on 4x4 High Mobility Vehicle (HMV). It has the capacity to shoot-and-scoot. The Indian Armed Forces offered assistance and direction for the project's development.^[6] With a typical high-explosive fragmentation round, MaRG 39 can fire up to 24 km (14.91 mi).^[14]

It can fire in Zone 5 and holds 18 artillery rounds. It has a burst rate of 3 shots in 30 seconds, an intense rate of 12 rounds in 3 minutes, and a sustained rate of 42 rounds in 60 minutes.^[15][16] The MaRG 45, which was introduced at the 2025 International Defence Exhibition in Abu Dhabi can accommodate up to six crew members in an armored cabin at the front of the vehicle in a two plus four configuration. A sizable stabilizer attached to the back of the HMV is dropped to the ground when it is necessary to transition it into combat readiness. In addition to offering a platform for the loader and room to store a spare wheel, the stabilizer aids in distributing the considerable forces that are imparted onto the vehicle during the gun's recoil.^[2]

• The MaRG 45 variant is a 155mm/45 caliber system which is placed on a 4x4 all-terrain high-mobility vehicle. The MaRG 45 is made to deploy quickly. It is compatible with NATO-standard and Indian Army in-service rounds and can fire conventional ammunition more than 36 km (22.37 mi) away. With Zone 6 firing capability, the system can carry 18 artillery rounds and weighs 23.5 tons in total. The chassis guarantees excellent maneuverability on a variety of terrains. It traverses 25° on both the left and right sides and ranges in elevation from -2° to +72°. For rapid-response operations in tough and inaccessible areas, the deployment time is 1.5 minutes during the day, and 2 minutes at night. MaRG can fire 10 rounds in 3 minutes at an intense rate and 42 shots in 60 minutes at a steady rate. The system was created by KSSL as a substitute for the K9 Thunder, ATMOS 2000, and CAESAR self-propelled howitzer.^[17][18][9]

• The smallest 155 x 52 mm mounted gun system in the world, the MaRG 52, was introduced by KSSL in 2026. It weighs 24 tons when mounted on a Kalyani 4x4 vehicle. It makes use of an autoloader and an aluminum gun carriage. It features shoot-and-scoot functionality and can fire five rounds per minute. It is a component of the progression that started with MaRG 39 and continued with MaRG 45. Since 155 x 52 mm howitzers are typically only installed on 6x6 or 8x8 trucks, the MaRG 52 is a compact weapon.^[8]

An unidentified friendly foreign nation placed an export order with Kalyani Strategic Systems on 9 November 2022, for the production of 155-mm artillery gun platforms within three years. The deal is for $155.5 million.^[19][20]

The MaRG 39 is the first mounted gun system from India to be sold abroad.^[21][8] On 7 February 2026, the Ministry of Defence of Armenia publicly unveiled the weapon, which is acquired through agreements with the Indian defense sector. The new weapon system enables digital integration with the domestically produced command and control (C2) infrastructure of the Armenian Armed Forces.^[22]

•  Armenia
  •  Armenian Ground Forces – 72 guns shipped to Armenia as of January 2026.^[8]

• K9 Thunder - South Korea
• ATMOS 2000 - Israel
• CAESAR self-propelled howitzer - France