|Place of origin||Czechoslovakia|
|In service||1938 to 1945|
|Used by|| Czechoslovakia|
|Wars||World War II|
|Barrel length||1.769 m (5 ft 10 in) L/47.8|
|Shell||APCBC, APCR, HE|
|Caliber||37.2 mm (1.46 in)|
|Muzzle velocity||762 m/s (2,500 ft/s)|
|Effective range||1,500 m (1,600 yd)|
The gun was the primary armament of the Czech TNH-PS light tank design, known in service with Germany as the Panzer 38(t).
In German service, in addition to conventional high explosive ammunition, the weapon fired two anti-tank rounds. The primary round was the Panzergranate 39 armor-piercing composite ballistic cap (APCBC) which could penetrate 41 mm of armor plate at 100 m and 35 mm at 500 m. Penetration dropped to 29 mm at 1000 m and 24 mm at 1500 m. The APCBC round was ineffective at 2000 m. The rarer tungsten Panzergranate 40 armor-piercing composite rigid (APCR) round could penetrate 64 mm at 100 m, but only 34 mm at 500 m. The APCR round was not effective at 1000 m or beyond.
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