The Mossberg 590 combat shotgun is based on the Mossberg 500 pump action, upgraded to military specifications. The Mossberg 590 has been adopted by the U.S. Navy, Marine Corps (1987) and Coast Guard, and is used by Special Forces as well as many law enforcement agencies.
Marine of Charlie Co., 1st Bn., 6th Marines with Mossberg 590 Shotgun, December 2003. Thanks to 'Fett' for correct shotgun ID.
Although based on the Model 500, and mechanically the same, the 590 has stronger parts, an optional vented heat shield (protecting from barrel heat), sling swivels, a bayonet lug (for the M7 bayonet), ghost ring sights, and an extended 9-round capacity magazine. The Mossberg 590 is an extremely rugged and reliable weapon that passed the rigorous military testing involving 3000 rounds fired without a failure. Both 2 3/4 and 3 inch shells can be mixed in the magazine.
The 20 inch barrel M590 weighs 7 pounds (empty). The 590 has a parkerized finish and durable synthetic stock and forearm. An ambidextrious safety is conveniently located on top of the receiver.
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