The 2S31 consists of a 120mm 2A80 gun mounted on the chassis of the BMP-3 infantry combat vehicle. A laser detector is mounted on the low part of the turret front, on either side of the 120 mm 2A80 ordnance and on either side of the turret roof at the rear which is used in conjunction with the smoke grenade system.
Although rifled, it can fire 120mm shells designed for smoothbore and rifled barrels. Laser-guided shells can also be fired. A total of 70 shells of 120mm ammunition are carried, about twice as many as carried by 2S9 or 2S23.
Specifications
Mass: 19.1 t (18.8 long tons; 21.1 short tons)
Length: 7 m (23 ft)
Width: 3 m (9.8 ft)
Height: 3 m (9.8 ft)
Crew: 4
Elevation: -4° to +80°
Traverse: 360°
Rate of fire: 8-10 rounds per minute
Maximum firing range: 7.2–13 km (4.5–8.1 mi)
Main armament
2A80 120 mm mortar
Secondary armament
7.62 mm PKTM machine gun
Engine: Diesel UTD-29, 340 kW (460 hp)
Power/weight: 19.4 kW (26.0 hp) per ton
Suspension: Individual torsion bar
Operational range: 600 km (370 mi)
Maximum speed: 70 km/h (43 mph)
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