Exclusive: Mossberg’s New Mag-Fed Model 590 Pump Gun

By Dave Workman

For some reason, with a new generation of shooters so tuned in to magazine-fed firearms, I figured it was only a matter of time before the marketplace not simply welcomed but demanded the appearance of magazines on existing popular firearms.

And so it has happened with the Mossberg Model 590 pump-action shotgun, as reliable a smoothbore as ever was. This 12-gauge workhorse has been around for a long time, so it’s a proven product.

Full disclosure here: I’ve got a Mossberg Model 500 pump gun where it’s very handy—just inside the front closet—and it has been a friend for more than 30 years. It has ridden along behind the seat of my truck, bounced around on some pretty ratty roads, put meat in the camp pot more than once and yet it just goes on working. The Model 590 is its zestier big brother.

The newest incarnation of the Model 590 is dubbed the 590M (designating it as a magazine-fed model) that can be fitted with 5-, 10-, 15- and 20-round box magazines (it comes with a 10-rounder and the others are optional), and it is available in two configurations. Both can be used for competition, tactical situations or home/business defense.

Mossberg’s Model 590M, like its Model 500 sibling, features twin action bars that work smoothly without binding. It’s got an anodized aluminum receiver, heavy-walled steel barrel, anti-jam elevator, dual extractors and the receiver is drilled and tapped for adding optics. The top tang safety is mounted where it may be used by right- or left-handed shooters, and both versions feature rugged synthetic stocks and forends.

The detachable magazine has what Mossberg describes as “uniquely designed integral stabilizing ribs which engage the magazine directly to notches engineered into the receiver.” This setup includes an all-steel, heat-treated magazine release button and housing situated in front of the triggerguard.

Mossberg’s double-stack magazine is patented, and it is made from a tough self-lubricating polymer, designed to handle 2 3/4-inch shells. The molded outer shell is designed for a firm grip. It features hardened steel feed lips, over-molded steel shell ramps, the anti-cant rounded follower delivers reliable feeding and the internal springs are made with ASTM-A-228 music wire.

One version is the “base model” 590M with an 18 1/2-inch cylinder bore barrel. It’s got a bead front sight and matte blue finish on the metal surfaces. The MSRP is $721.

The other version is the Tri-Rail model with a “tactical forend” that includes a full- length bottom rail for mounting accessories, such as lights. The 18 1/2-inch barrel has a protective heat shield and is threaded for interchangeable ACCU-CHOKE tubes, and it comes with a cylinder bore tube. A Ghost Ring rear sight tops the receiver and the elevated front blade sight is dovetailed into a ramp base. This model has an MSRP of $801.

Both models feature a QD sling swivel stud on the front of the tube below the barrel and there’s a rear sling attachment molded into the butt stock.

Find out about these and other Mossberg shotguns at: www.gunsmagazine.com/company/of-mossberg-sons-inc

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14 thoughts on “Exclusive: Mossberg’s New Mag-Fed Model 590 Pump Gun

  1. Jeffrey L. Frischkorn

    ugh… pug-ugly, too…. still scratching my head as to practicality and usefulness… a niche shotgun, n

    1. Tom Schrader

      Right? If it functions as a conventional tube fed shot gun, with the option to add the magazine I might see a purpose. IDK though

  2. johnL

    I like it. It is functionally beautiful! It gives u options and increases the pumps positives and decreases it s downsides.

    1. Chaim Mayer

      Agree with Jeffrey. Not to mention the weight with a 10 round mag and cumbersome. Don’t forget your hearing protection. “pug ugly” is being kind. For my money, better off with the Kel Tec or similar genre’.

  3. Jerry R

    With a full length tube magazine already on the shotgun that will hold a good 5+ rounds, why add the weight and clumsiness of a mag? I bet if they made a 30rnd mag. you could use it as a mono-pod to rest the gun on while your standing! To each their own I guess.

  4. Dave

    Oh no, its not aesthetic. Instead a take apart 16 GA of hand-rubbed walnut in a hand-tooled leather case built by Sir Somebody and also owned by Her Majesty THE QUEEN, better to impress the guy breaking your door down.Good luck getting it together in time.

  5. Mingo

    DITTO what JohnR said Plus I like the fact that you can get 5-, 10-, 15- and 20-round box magazines and aren’t just stuck with only one type such as only a 5 rnd. which is what I expected if this ever happened.
    Nice 🙂

  6. Joe Nyomozo

    Oh pleeease! Something we all talked about for a long time (Russians way ahead of us in this) and now manufacturers are putting “magazines” on shotguns. Oh fine and well but really why is a Mossberg all the sudden cost twice as much? GIMMICK! That is why! Retooling to have a magazine accommodate the bottom port does not cost $350 per gun! We shouldn’t buy it until the price settles of what it should be; like the old gun price plus maybe $50 plus the mag! Mossberg you aint a Saga 12, LOL! Enough said!

  7. Tim Toroian

    It would make a good law enforcement gun and a good house gun since you could have spare mags and if you need a reload it’s a bunch easier than shoving rounds 1 at a time in a bottom slot.With a 2 shot mag it would be nice for hunting, too. The only thing that might make it better in a survival situation would be if it was semi-auto. You could carry spare mags with different ammo for use depending on the situation.


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