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The main armament of NORA B-52K1 consists of a 155 mm barrel length of 52 calibers, fitted with a semi-automatic breech block, automatic loader and an advanced solution of powder chamber self-obturating system. The automatic loader consists of two cassettes containing 12 projectiles and 12 propellant charges, projectile and charge feeder and chain rammer controlled by PLC thus increasing the firing rate and minimizing crew effort. The loader can be refilled from the container on the deck of the vehicle. The container has 8 removable cassettes each containing 6 housings (4 in the middle for storage of projectiles and 2+2 on the left and right side for propellant charges). This makes the total combat set 36 rounds. Gun-ammunition system is fully compatible with 155mm NATO Agreement requirements. During transport/traveling of the weapon, its armament is turned forward, above the vehicle cabin, with the barrel being fixed by the barrel holder. To provide a more stable firing platform, four hydraulic stabilizers are lowered to the ground by remote control, on either side of the chassis and two at the rear. To increase the self-protection of the vehicle, a 7.62 mm or 12.7 mm can be mounted at the top of the crew cabin. The NORA B-52K1 can fire at a maximum range of 41.2 km with a full range of ammunitions as HE ERFB-BB, ERFB-BT, standard 155mm M107, or laser beam guided projectile. Two smoke grenade dischargers are mounted on each side at the front of the crew cabin.
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