3,7cm KPÚV vz. 34

The '''3,7cm KPÚV vz. 34 (kanón proti útočné vozbě) (designated 3,7cm PaK 34(t)''' in German service) was an anti-tank gun produced by the Škoda Works in Czechoslovakia. Škoda's own designation for it was A3. It is not known if guns seized by German after the occupation of Bohemia-Moravia saw service in World War II. Slovakia acquired 113 when it declared independence from Czechoslovakia in March 1939. The ''ÚV vz. 34 version that equipped the Czech LT vz. 35'' tanks also seized was used during the war.

It was designed to a Czech Army requirement to penetrate 30 mm of armor at 1000 m in 1934. It also fired a HE shell out to a maximum range of 4000 m. The gun had a small shield and wooden-spoked wheels, although some were fitted with pneumatic wheels.

The ''ÚV vz. 34'' tank gun fired a .815 kg armor-piercing shell at 690 m/s. It was credited with penetrating a plate inclined at 30° from the vertical 37 mm thick at 100 m, 31 mm thick at 500 m, 26 mm thick at 1000 m, and 22 mm thick at 1500 m. Another source quotes penetration of a vertical plate 45 mm thick at 500 m. It was mounted on the T-32 (S-I-D) tank destroyer, as well as the LT vz. 34 and LT vz. 35 tanks built by the Czechs.