HM 41 is an Iranian howitzer which is claimed to be based on the American M114. In appearance, it is very similar to the South Korean KH179.It has a 155 mm/39 calibre barrel with a muzzle brake to lessen the recoil. According to Iranian sources, the 155 mm/39 calibre HM41 weighs 6,890 kg and firing a rocket-assisted High-Explosive (HE) projectile, a maximum range of 30,000 m can be achieved. Firing an unassisted HE projectile, a maximum range of 22,000 m can be obtained. This is an improvement as compared to the M114.The Howitzer has been offered for export. But no country is known to be using it except Iran.