The ZB-53 / vz. 37 air-cooled, belt-fed machine-gun was manufactured by the Czechoslovak arms ZB factory. It was a gas operated, automatic-only weapon (with selectable rate of fire), which fires from an open bolt. The ZB-53 uses belt feed, from non-disintegrating steel belts which are fed from the right side only. The ZB-53 was issued with tripods of several designs.
These machine guns were also mounted into tanks by various nations like the Czech LT vz. 35 and LT vz. 38, the German Panzerkampfwagen 35(t) and Panzerkampfwagen 38(t) and most British tank designs of the WW2 period. The British Birmingham Small Arms Company manufactured licensed modification of the tank version of ZB-53 named the Besa Machine Gun. It also served in large quantities in the German Army of WW2 under the designation MG 37(t) (infantry tripod and tank version).
