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      1. MK-38

        MK-38

        Description:


        Features: The MK-38 is a 25-mm (one inch diameter) heavy machine gun, effective to 2,700 yards (2,457 meters).

        The MK-38 MOD 0 25mm Weapon System consists of the M242 25mm Automatic Gun supported by the MK-88 MOD 0 Gun Mount, which is controlled by the MK-218 MOD 0 Power Control Unit. The pedestal Gun Mount supports the 25mm Automatic Gun, Ammunition Tray, and Gun Control Box. It is an unstabilized system that is hand-aimed. The Power Control Unit drives the motor of the gun feed and bolt action of the Automatic Gun. The Power Control Unit consists of a Gun Control Unit, Battery Charging Unit, and a 24 VDC battery.

        The M242 is based on the traditional "Chain Gun" in which a loop of standard industrial double-row roller chain drives the bolt of the Automatic Gun back and forth. The chain runs at constant speed, carrying a shoe that drives the bolt. When in line with the bolt, the shoe pulls back and forth, locking and opening the bolts when the shoe travels to one side along the belt, and the Automatic Gun has time to fire or to eject a fired cartridge (shell). The feed to the gun is powered by the same motor that drives the chain.

        Background:The MK 38 machine gun system (MGS) was employed aboard various combatant and auxiliary ships in the Mid-East Force escort operations and during Operations Desert Shield and Desert Storm. The weapons are maintained in a rotatable pool, available for temporary installation on various deploying ships and permanent installation on certain amphibious and auxiliary ships, patrol craft and Coast Guard cutters.

        PHOTOS

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