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The Mossberg 590 Mariner is an 8+1 capacity 12-gauge pump-action gun with a 20” barrel. The name comes from the Marinecote and black color motif. Marincote looks like stainless steel. It’s the finish of the barrel, receiver, trigger, swivel studs and magazine tube. This color contrasts nicely with the black of the synthetic buttstock and forend, trigger guard and rubber buttpad.

The 590 Mariner has a 3” chamber. Moving back, length-of-pull is fixed at 13.875”. The gun has a bead sight and cylinder bore choke. Overall length is 41”, and the gun weighs 7.0 pounds.

The gun’s 20” barrel is longer than the 18.5”, etc., found in some of the other Mossberg 590s. But it is this longer barrel that also permits a longer magazine tube that brings capacity up to eight rounds.

The 590 Mariner comes with an attachable pistol grip that has finger recesses and a beavertail for improved handling. It also has a red dot slide tang safety, dual extractors and an anti-jam elevator that’s designed for slick movement.

The Mossberg 590 is a prolific family of 12-gauge, 20-gauge and .410-gauge pump-action guns that derive from the earlier Mossberg 500 series that debuted in 1960. A key difference on the 590s is their magazine tubes open from the front, making cleaning and maintaining them easy.

Other Mossberg 590 series pump-action guns are described elsewhere here at

Do you have a Mossberg 590 Mariner for sale? click here.


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Mossberg 590 Mariner

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