First delivered to the British Army in 1993, the AS90 equips 5 field regiments,
replacing the Abbot and M109. AS90 is equipped with a 155mm gun which fires the NATO L15
unassisted projectile out to a range of 24.7 kms. Fitted with autonomous navigation and
gun laying system (AGLS), AS90 can work independently of external sighting references.
Central to the system is an inertial Dynamic Reference Unit (DRU). All main turret
functions are controlled by a Turret Control Computer (TCC). This technology allows AS90 a
burst fire capability of 3 rounds in 10 seconds.