The 85mm air defense gun M1939 (52-K) was a Soviet air defense gun, developed under guidance of leading Soviet designers M. N. Loginov and G. D. Dorokhin. This gun was successfully used throughout the German-Soviet War against level bombers and other high- and medium-altitude targets. Kit features multi-part gun barrel and muzzle brake, sight and laying mechanisms, multi-part breech block, ammunition, vinyl tires and photo-etch fine details. Assembled gun is adjustable in elevation and azimuth; may be built in transport or firing configuration. 5-view color painting guide for (1) typical weapon.