The combat proven RO Defence Light Gun is the world's most advanced 105mm artillery system. It combines unparalleled air, sea and land mobility with highly effective firepower at both high and low elevation. The weapon system can fire a wide range of ammunition natures to give a firing capability unique to 105mm calibre. The Light Gun is capable of firing the full range of Ml ammunition including the new 105mm ERM1-HE round designed to provide extended range. The M119 LG (US designation) is the only gun type classified by US DoD to fire M913 High Explosive Rocket Assisted (HERA) projectiles, achieving a range of 19.5km.

The RO Defence Light Gun is an ideal candidate to replace ageing M101 105mm artillery systems whilst utilising existing ammunition stocks.