The 76.2 mm anti-aircraft gun Model 1935 (34-K) (Russian: 76.2-мм зенитная пушка обр.
The 55-caliber gun was derived from a German weapon licensed in 1930.
The initial attempt to put the gun on a naval mount was a failure.
The Kalinin factory started work in 1934 on a new design that was accepted in late 1936.
The same mount was combined with the Army 85 mm (3.3 in) gun as the 90-K system beginning in 1942.