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The original Shockwave turned plenty of heads, but the 590S version fixed the one thing that always bugged people about it: mini shells. This one cycles 1.75", 2.75", and 3" shells interchangeably with no adapter, thanks to a redesigned elevator, updated bolt slide, and an energy absorbing bumper. Load all one length or mix them in the tube however you like, and the action feeds them without complaint. That flexibility changes your capacity too. You get 8+1 with 1.75" mini shells, 5+1 with standard 2.75" loads, and 4+1 with 3" magnums.
Underneath the birds head grip, this is still a 590 where it counts. Dual extractors, twin action bars, positive steel to steel lockup, and an anti-jam elevator are the same hard use parts that have kept Mossberg pumps running for decades. The heavy walled 14.375" barrel wears a matte blued finish with a fixed cylinder bore and a simple front bead, and the tang mounted safety sits right under your thumb whether you shoot right or left handed. There is even a clean out cap on the magazine tube to make maintenance easier.
At 26.37 inches overall and about 5.3 pounds, the 590S Shockwave moves through hallways and fits in truck consoles, packs, and bedside setups where a full size shotgun just will not. The Raptor grip and strapped corn cob forend give you real control over recoil, and running mini shells softens things up considerably while nearly doubling your round count. That combo makes this one of the more practical short 12 gauges out there, and a genuinely fun one to run at the range.
If you want maximum firepower in minimum space, this checks the boxes. It is compact, simple, and feeds whatever shell length fits the job that day. Spend a little time practicing with it and the Shockwave rewards you with fast handling that a stocked gun cannot match in cramped quarters.
Yes, that is the whole point of the S in 590S. Mossberg redesigned the elevator and bolt slide and added an energy absorbing bumper so the action cycles 1.75", 2.75", and 3" shells straight from the factory. You can even mix shell lengths in the magazine tube and it will feed them in whatever order you loaded.
It depends on what you feed it. You get 8+1 with 1.75" mini shells, 5+1 with standard 2.75" shells, and 4+1 with 3" magnum loads. Running minis is a popular choice here since it nearly doubles your round count and cuts recoil noticeably.
The Raptor birds head grip is shaped to direct recoil into your hand at an angle instead of straight back, and the strapped corn cob forend keeps your support hand planted while you run the pump. Full power buckshot is stout but very manageable with a little practice, and mini shells make it downright pleasant. Most folks find a push pull grip technique tames it quickly.
From the factory it wears a simple front bead, which suits its close range role well. The receiver is drilled and tapped in standard 590 fashion, and the huge aftermarket for Shockwave models means lights, lasers, side saddles, and grip upgrades are easy to find. Most owners add a weapon light first since this is a defense oriented firearm.
| UPC | 015813516013 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 51601 |
| Action | |
| ATF Type | Pistol Grip Firearm |
| Barrel Finish | Matte Blued |
| Barrel Length | 14" |
| Caliber/Gauge | 12 Gauge |
| Capacity | 8 + 1 |
| Chokes Included | Fixed Cylinder |
| Color | BLUED |
| Length | 33 |
| Magazine Included | Tubular Magazine |
| Model | |
| Package Height | 2.8 |
| Package Width | 7.8 |
| Product Type | Shotgun |
| Safety | Ambidextrous Top Tang |
| Shipping Weight | 7.1 |
| Sights | Bead |
| Sights Type | Fixed Sights |
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