3,7cm KPÚV vz. 34

The '''3,7 cm KPÚV vz. 34 (kanón proti útočné vozbě) (designated 3,7 cm 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 Germany after the occupation of Bohemia-Moravia saw service in World War II. Slovakia acquired 113 when it declared independence from Czechoslovakia in March 1939.

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.

ÚV vz. 34 tank gun
The ''ÚV vz. 34'' fired a .815 kg armor-piercing shell at a velocity of 690 m/s. The vz.34 comprised the main armament of a number of Czech/German armored vehicles.

Armored vehicles:
 * T-32 (Š-I-D) - Czech tank-destroyer.
 * LT vz. 34 - Czech light-tank.
 * LT vz. 35/Panzer 35(t) - Czech/German light-tank.

Performance
* Another source quotes penetration of a vertical plate of 45 mm thick armor at 500 m.