M109 Self-Propelled Howitzer

by | Aug 27, 2025

The M109 is a family of American-made self-propelled 155mm howitzers that have served as a foundational element of Pakistan’s armored artillery since their acquisition. The system is designed to provide mobile, responsive fire support to ground forces, combining the firepower of a howitzer with the mobility of a tank. The Pakistan Army operates several variants, with the most common being the M109A2 and the more advanced M109A5. The M109A2 is a classic tracked vehicle with a rotating turret housing a 155mm M185 cannon, which has a standard firing range of up to 18.1 km with conventional ammunition. The M109A5 is a significant upgrade, featuring a longer M284 cannon and a modernized fire control system that extends its range to 30 km with rocket-assisted projectiles (RAP). The M109’s armored chassis provides a crucial level of protection for its crew of six (or four in the A5 variant) from small arms fire, artillery fragments, and CBRN (Chemical, Biological, Radiological, Nuclear) threats. The vehicle is powered by a Detroit Diesel engine, allowing it to keep pace with armored formations. Despite its age, the M109 has proven to be a reliable and highly versatile platform, capable of firing a wide variety of 155mm munitions, including high-explosive, smoke, illumination, and precision-guided rounds. Its tracked design allows it to operate effectively in a variety of challenging terrains. The M109 remains a key asset in Pakistan’s military, offering a formidable combination of mobility, protection, and firepower.

  • Type: 155mm Self-Propelled Howitzer
  • Armament: M126A1 or M185 (A2) / M284 (A5) 155mm howitzer
  • Range: Up to 18.1 km (M109A2) and up to 30 km (M109A5)
  • Crew: 6 (M109A2), 4 (M109A5)
  • Mobility: Tracked, powered by a diesel engine
  • Rate of Fire: 4 rounds per minute (sustained)
  • Key Features: Armored protection, high mobility, can fire a variety of ammunition types, and has undergone multiple modernization programs.