Mossberg 590S series: Upgraded for mini-shells

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Mossberg 590S series: Upgraded for mini-shells

Zac Kurylyk in Guns on October 25, 2021

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Mossberg is introducing four new shotguns in the 590 series. The new pump-action 590S line is very familiar, based on the existing 590 tactical series, which is itself based on the 500 series. The biggest change on the new-and-improved guns is revised internals, designed to cycle 1.75-inch mini-shells. Now, shooters can stuff more than a dozen shells into their 590S, and expect it to work properly from the factory.

According to Mossberg, the company saw owners of existing 590 models resorting to aftermarket upgrades, in order to make their shotguns feed mini shells properly. The new 590S series should make that unnecessary, and some of the new models also come with other out-of-the-box features that shotgunners, particularly competitive shooters, would also include (M-LOK forend, etc.), making these shotguns a practical base for tactical builds.

Unlike some other aftermarket feed systems, the 590S internals also works well with standard 2.75-inch and 3-inch shells.
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The new shotgun series includes a standard security-style pump with plain cylinder bore 20-inch barrel and standard corncob forend, and bead sight. There's an updated tactical-style version with 20-inch barrel with Accu-choke threads, ghost ring sights, and M-LOK forend. Both of these shotguns have a standard-style stock.

The new 590S series also has two cut-down shotguns with birdshead-style grips, and forends with straps for control while firing. One model has a 14.375-inch barrel, with accordingly short magazine tube. The other has a 18.5-inch barrel, with longer magazine.
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The longest 20-inch barreled versions have magazine capacity of 13+1 1.75-inch shells. The shorter birdshead model has 8+1 capacity with mini shells. The longer birdshead model has 9+1 capacity with mini shells.

Canadian pricing is not yet announced; American MSRP for the two birdshead models and the 20-inch standard-barrel model is $605 USD. The upgraded model with Accu-choke barrel, M-LOK forend and ghost-ring sights is $708 USD.

 
I'd like to see a new Versamax optimized for minis - given that it's "designed and chambered" for 3 1/2 inch shells. Although, to be fair in a 930, 9+1 rounds should deal with most things.
 
Other companies making shotguns should take note.
Imagine the long boi KSG with mini-shell compatibility.
 
That is interesting. I have to use the OpSol adapter in order to cycle the minishells/short shells on my 590 shockwave. It would be interesting to see how they designed it to feed both because with my adapter in, I can't feed the full sized rounds. Maybe it's some sort of spring ramp that adjusts depending on whether it is a short shell or full size. Interesting nonetheless and if there was a retrofit available to convert existing 590s to load both that would be very compelling.
 
Considered one of these for online purchase but expensive in Canada for the full stock version and don’t think I want ghost ring sights. Afaik these are threaded for chokes as well. The full stocked version anyways.
 
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