The AS-90 (acronym for: Artillery System for the 1990s, known officially as: Gun Equipment 155 mm L131) is a lightly armoured self-propelled artillery piece used by the British Army. The AS-90 was first deployed by the British Army in 1993,. 179 were acquired to re-equip six of the eight self-propelled field artillery regiments (each 24 guns) in the 1 (BR) Corps, replacing the 105 mm FV433 Abbot SPG and older M109 155 mm Self Propelled Gun. It remains in UK service and will equip three field regiments supporting armoured infantry brigades for the foreseeable future.