76 mm mountain gun B-1 M-48 (AKA the Tito Gun)
The first M-48B-1 models may have been Czech M28 mountain guns (bought by Yugoslavia in 1930s) relined from original 75mm calibre to Soviet 76 mm (as used on their 76mm regimental and divisional guns), with muzzle-brake added to cope with increased recoil (also Skoda type, borrowed from M.36 AA model).
