The Oerlikon KBA is a 25 mm (25×137mm) autocannon, developed as a close range multipurpose weapon for the mechanised battlefield, originally made by Oerlikon (now Rheinmetall AG). It is a positively locked breech, gas-operated cannon with a rotating bolt head and a dual-belt selective feed system taking a 25mm NATO cartridge. The rate of fire in burst mode is 600 rounds per minute but it can be adjusted electronically and reduced to single shot or a selectable range between 100 and 200 rounds per minute.