 The bolt locked via a Stange-type machined sleeve with internal interrupted threads, similar to some Solothurn weapons such as the 7.92 mm (.312 in) MG 30 light machine gun.The locking system was strong, but rate of fire was limited to a rather slow 230–260 rpm, which limited its use against other aircraft.Powerful and accurate for its day, it was carried primarily on the Henschel Hs 129 ground-attack aircraft, commencing in late 1941.