The 76-mm regimental gun M1943 (OB-25) (Russian: 76-мм полковая пушка обр.

(ОБ-25)) was a Soviet infantry support gun developed in 1943 by M. Yu.

The gun was intended for destruction of light field fortifications and openly placed personnel by direct fire.

HEAT shells gave it limited anti-armor capabilities.

Soon after the end of the war the production ceased due to insufficient range and muzzle velocity.