Aka M1971 this version was fitted with the first production type turret which had a firing port on the turret lhs.
The welded turret, which does not overhang the side of the hull, has a well-sloped front and sides with the commander seated on the left, gunner in front of and below the
commander and the loader on the right. The indirect sight is mounted in the roof of the turret, forward of the commander's cupola with the direct sight being mounted to the
left of the main armament. A long stowage box is often mounted on the left side of the turret and there is a large door in the rear of the hull, hinged on the left side. The rear
door has a single firing port in the center.
The Gvozdika's main armament, designated the 2A31, is a modified version of the 122-mm D-30 towed howitzer. The ordnance is fitted with a fume
extractor and muzzle brake and is held in position when traveling via a lock on the hull glacis plate which is operated by remote-control by the driver. A
power rammer and extractor are fitted to the folding guard rail to enable a higher rate of fire to be achieved and to permit loading at any angle of elevation.
A maximum sustained rate of fire of 5-8 rds/min can be obtained with a sustained rate of fire of 70 rounds for the first hour and, of the 40 122mm
projectiles normally carried, 32 are HE, six smoke and two HEAT-FS. Of the 40 rounds of 122-mm ammunition carried, 16 are in standby stowage on the
left and right of the sidewalls. When in action, ammunition would normally be used from outside the 2S1 system and fed to the crew inside via a ramp.
One of the two ammunition members outside the vehicle is connected to the vehicle intercom and would fuse the projectiles before they are passed into
the vehicle. The remaining 24 projectiles and charges are stowed near the loader's position with the empty cartridge cases being ejected outside the
turret. The ammunition has the following characteristics...
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