For the ultimate in shooting flexibility, Mossberg’s 590S family of 12-gauge pump-action shotguns are capable of cycling 1.75, 2.75, and 3-inch shotshells interchangeably, in any combination, without the use of an adaptor. Pick one shotshell length for specific shooting needs, or simultaneously load any combination of those shell lengths. The 590S Series includes two full-length stock options and two versions of the bird’s head-gripped Shockwave.
With multiple versions available including optics-ready and Shockwave, there’s a 590S to fit everyone!
We worked with Mossberg to get a 590S Shockwave pump-action down to the crew with IraqVeteran8888 for a review – let’s break it down!
FROM 590 to 590S: WHAT’S NEW

Based upon Mossberg’s legendary 500 pump-action platform, 590 tactical shotguns include non-binding twin action bars; positive steel-to-steel lock-up and anti-jam elevator; dual extractors; drilled and tapped receivers; and universally-recognized, ambidextrous top-mounted safety. Enhancing the decades-proven 500 platform is a convenient clean-out magazine tube with cap for ease of maintenance.
Key design changes of the 590S include a redesigned elevator and bolt slide combined with the addition of an energy-absorbing bumper. This patent-pending innovative platform allows the user to load their choice of shotshell length (1.75, 2.75, and 3-inch) and shotshell type for their specific shooting needs, and in any combination. The use of shorter shell lengths also increases the overall capacity of the 590S.
590S SHOCKWAVE FEATURES
Standard features on Mossberg Pump-Action Shotguns: Dual extractors, twin action bars, positive steel-to-steel lockup, and anti-jam elevator provide smooth operation. Other features include a top-mounted ambidextrous safety, matte blue metal finish, magazine clean-out tube with cap, and a logo-engraved receiver.
590S models cycle 1.75″; 2.75″ or 3″ shells, interchangeably, without the need for an adaptor. Pick one shotshell length, or simultaneously load any combination of the three!
The compact Shockwave-gripped models come with a choice of 14″ or 18.5 barrels, both equipped with bead sights.

590S SHOCKWAVE AT THE RANGE
The 590S Shockwave with the 14″ barrel would really make a really cool SBS if that was a project that you wanted to do. Putting a pistol grip on it and a shorter stock is an option with this particular firearm. It ships with the smooth birdshead grip on it and it’s a very compact, very light little gun that falls into the firearm category – a smooth bore firearm.

These Shockwaves can also be very practical, as Crimson Trace makes a sidesaddle that mounts on these particular guns so you can zero them in just right. We have an SBS that we dropped one on and it works exceptionally well, so this would be a really good candidate for that so you can actually aim it from the hip with the laser sight.
This is pretty much identical to the old Shockwave except that you can run the mini shells out of it for a larger round count.
CONCLUSION
Whether you’re aiming or shooting from the hip, the Mossberg 590S Shockwave is a nice short little firearm that’s versatile and easy to use!
To learn more about this and all models of the Mossberg 590S Shockwave, visit Mossberg.com!
RELATED CONTENT: Watch IV8888 Take the Mossberg 590S Shotgun for a Spin at the Range
