The EX-34 was specifically designed for use as a coaxial weapon in armoured vehicles, and has a number of features that make it suitable for this role. The gun is externally powered, meaning that misfires do not need to be manually cleared; instead, the rounds are simply ejected. All spent cases are ejected forwards out of the turret. This prevents any build-up of spent shell cases causing stoppages. Additionally, all gas generated by firing is vented through the barrel and ejection tube, preventing the build-up of toxic gases inside the armoured vehicle. The weapon is cooled by a
venturi system, which draws cool air down the jacket and acts as a fume extractor. The weapon was originally intended as a replacement for the coaxial weapon in the American
M60 tank. The weapon was evaluated by both the US Army and the US Naval weapon center, who reported that the performance of the weapon was outstanding during all phases of testing. It has a reported rounds between failure rate of approximately 50,000 rounds. ==Problems==