This gun/launcher could fire conventional 152 mm rounds like High Explosive, anti-personnel, M409A1 High Explosive Anti-Tank (HEAT) and the XM578E1 Armor Piercing Fin-Stabilized Discarding Sabot (APFSDS) rounds, but also the MGM-51 Shillelagh missile, a 152 mm guided missile, which had a combat range of some 3000 meters .