The M327 Grenade Launcher is the ISA's one and only grenade launcher manufactured by ISA Laboratories. It fires 40 x 46 mm mid velocity high explosives from a six-round revolver-style cylinder, which are useful for blanketing an area to deny enemy access, or for taking advantage of the chaos of a distant firefight. The weapon is also very effective at knocking out enemy positions at medium and long range, at ground level or elevated positions. In the original Killzone, however, the M327 had a secondary function of firing proximity mines, which would stick to the surface of whatever the weapon was pointed at.