- Years of production-1943-1945
- Total issued – no data available
- Caliber-76.2 mm
- Weight in combat position-570 kg
- Barrel length-1513 mm
- Length of the rifled part – no data available
- Payment – 6 people
- Driving speed-40 km / h
- Rate of fire-25-30 rounds/min
- Maximum firing range-510 m
- Direct shot range-400 m
- Horizontal – 60°
- Vertical – 11° +37°
76-mm Regimental Gun S-5-1 Details
Since the 76-mm regimental gun of the 1943 model of the year did not fully satisfy the military in its combat qualities, the improvement of regimental guns continued. Already in the summer of 1943, the Central Artillery Design Bureau (TsAKB) under the leadership of V. G. Grabin began work on the creation of a new 76-mm regimental gun, which received the index “S-5-1”. The S-5-1 regimental gun was radically different from its rival OB-25. This artillery system, with the same ballistics and ammunition as the 1943 model regimental gun, had a significantly longer firing range (up to 5100 m), which was achieved due to a larger elevation angle (37° versus 25°).
The semi-automatic vertical wedge bolt allowed to increase the rate of fire by more than two times (up to 25-30 rounds/min). The carriage of the S-5-1 gun consisted of a cradle with recoil devices, an upper mobile machine with guidance mechanisms, a lower stationary machine with sliding box-shaped frames, a sprung course, a shield cover and sighting devices. The height of the firing line was 720 mm . If the regimental gun of the 1943 model of the year was sprung by cylindrical springs, the S-5-1 gun received a new design of more reliable torsion springing, which provided a higher speed of transportation. The S-5-1 gun passed field tests at the Main Artillery Range in the summer of 1945, but according to the GAU’s conclusion, this gun did not pass the test and work on it was stopped.