Mossberg 590 Shockwave Now in 20 Gauge

by
posted on October 25, 2017
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
moss_lede_590-shockwave-600x140.jpg
One of the most talked-about firearms to come out of the 2017 SHOT Show was the Mossberg 590 Shockwave—a 12-gauge 14" barrel pump-action gun that does not require NFA paperwork. We've covered it extensively, and you can learn more about it here. One of the main questions folks have been asking since its introduction is, "Will it be offered in a 20-gauge model?" We now the answer: Yes, and they are already in production and shipping to wholesalers.

The 20-gauge version of the Shockwave required an engineering redesign, as this is Mossberg's first offering of the 590 in a smaller gauge. In addition to a scaled-down receiver, the cob-styled, tactical fore-end was reduced in overall size. The gun weighs in at a mere 4.95 lbs., has a 6-round capacity, and has an overall length of 26.4".

At the core of the 590 Shockwave is Mossberg's non-binding twin action bars, positive steel-to-steel lock-up, an anti-jam elevator, dual extractors and Mossberg's universally recognized, ambidextrous top-mounted safety. The lightweight receiver is constructed of anodized aluminum and is drilled and tapped for an optic or accessories. The magazine tube features a convenient clean-out cap. The gun is 2¾" and 3" capable and features a heavy-walled barrel with bead sight and matte blue finish. Rear and magazine cap sling swivel studs complete this compact package.

The "bird's head"-shaped pistol grip from Shockwave Technologies provides this 590 with its distinctive name. The Shockwave Raptor grip features an enhanced textured finish, allowing for maximum control while minimizing felt recoil. The grip is constructed of durable, glass-filled polymer with non-reflective, black finish and overall length of 5.25".

Specifications:
  • Type: 590 Non-NFA Pump-Action
  • Gauge/Chamber: 20-ga. 3"
  • Capacity: 6 shells
  • Barrel/Finish: 14.37" in Heavy-Walled Matte Blue
  • Sights: Bead
  • Chokes: Cylinder Bore
  • Overall Length: 26.37"
  • Fore-end/Stock/Finish: Shockwave Raptor Grip/Cob Fore-end with Strap/Black Synthetic
  • Approx. Weight: 4.95 lbs.
  • MSRP: $455

For more information visit mossberg.com

Additional Reading: 
Mossberg M590 Shockwave Review
Dressing Up the Mossberg 590 Shockwave
NRA Gun of the Week: Mossberg 590 Shockwave
Tested: Mossberg 590 Shockwave
Editors’ Picks 2017: Mossberg Shockwave
SHOT Show 2017: Mossberg 590 Shockwave

Latest

Benelli Nova 3 Tactical shotgun
Benelli Nova 3 Tactical shotgun

Benelli Nova 3 Tactical: Innovation Meets Simplicity

Famous for its semi-automatic shotguns, Italian maker Benelli steps up its game in pump-actions—and forecasts more availability of U.S.-market-ready versions in the future.

Marines Turned Arms Inventors: Melvin Johnson & Eugene Stoner

Within the pantheon of U.S. Marine Corps small arms, two rifles are indelibly linked with the Corps’ combat experience in the 20th century, and both were designed by Marines: the Model 1941 Johnson Rifle and the M16.

The Armed Citizen® Nov. 3, 2025

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

The Case For Velocity

Although the effects of a bullet's terminal performance had been thoroughly studied by 1955, ammunition pioneer Roy Weatherby sought to prove velocity trumps mass and, as a result, built a reputable business that continues to advance today.

Preview: Kriss Vector CRB Gen 3

The third generation of Kriss’ distinctively shaped Vector line was introduced earlier this year, with the company offering the platform in carbine (CRB), large-format pistol (SDP) and short-barreled rifle (SBR) formats ...

Staccato 2011 HD C3.6: Shrinking The 2011

Following the release of its HD model, which was designed to accept Glock-pattern magazines, Texas-based firearm maker Staccato announced it had developed a smaller, carry-ready variant: the 2011 HD C3.6.

Interests



Get the best of American Rifleman delivered to your inbox.