GunsNS-37НС-37НС-37Caliber37 mmService193119321933193419351936193719381939194019411942194319441945Soviet Union · Eastern Front≈ Oct 1942 – May 1945Aircraft 3193119321933193419351936193719381939194019411942194319441945LaGG-3 Series 34≈ Oct 1942 – Feb 1943Yak-9T2,748≈ Mar 1943 – May 1945Il-2 NS-373,500≈ Jul 1943 – Aug 1943