
Availability: In Stock
The Mossberg 590S optic-ready 12 gauge pump-action shotgun brings genuine versatility to home defense, sport shooting, and tactical applications. Built on the proven Mossberg platform, the 590S stands out for one core feature: it cycles 1.75-inch short shells, 2.75-inch standard shells, and 3-inch magnum loads interchangeably—no adapters, no swapping out the magazine tube, no guesswork. Load whatever combination of shell lengths fits your mission, and the gun handles them all without adjustment. With a 13-round capacity, 20-inch barrel, and factory-ready optic mount, this is a modern fighting shotgun that doesn't ask you to compromise on ammunition flexibility or firepower.
The action speaks Mossberg reliability: dual extractors, twin action bars, and positive steel-to-steel lockup ensure smooth, snag-free cycling even under hard use. The redesigned elevator bolt, slide, and energy-absorbing bumper smooth out recoil and reduce wear. An ambidextrous safety keeps the gun accessible whether you're left- or right-handed, and the synthetic stock with M-Lok forend is purpose-built for mounting lights, grips, or slings. The matte blue finish on the barrel and receiver resists corrosion and shows a clean, business-like appearance.
Out of the box, the 590S wears a bead sight and ships with a Cylinder Bore Accu-Choke installed—you can swap chokes to tune patterns for your load. The optic-ready top rail accepts most common red-dot sights and magnified optics, letting you outfit it for the job at hand. At 7.25 pounds with a fixed 13.87-inch length of pull, it balances control and pointability. Whether you're running it for home defense, clay sports, or tactical training, the 590S gives you the flexibility to choose your shotshell without choosing a new shotgun.
| Gauge | 12 Gauge |
| Action Type | Pump-Action |
| Chamber | 3" (cycles 1.75", 2.75", and 3" shells) |
| Capacity | 13+1 (with 3" shells); 8+1 (with 2.75" shells); 7+1 (with 1.75" shells) |
| Barrel Length | 20" |
| Barrel Finish | Matte Blue |
| Choke | Accu-Choke System; Cylinder Bore choke installed |
| Sights | Bead sight; Optic-ready rail |
| Stock | Synthetic with M-Lok forend (Black) |
| Length of Pull | 13.87" |
| Overall Length | 41" |
| Weight | 7.25 lbs |
The 590S cycles 1.75-inch short shells, 2.75-inch standard loads, and 3-inch magnum shells—all in the same magazine tube, in any combination you load. No mini-shell adapters or magazine swaps required.
Yes. The 590S ships with a factory-integrated optic-ready rail on top of the receiver designed to accept standard red-dot sights, magnified optics, and other rail-mounted accessories.
A Cylinder Bore Accu-Choke is factory-installed. The Accu-Choke system allows you to change chokes to adjust your shot pattern for different loads and distances.
Yes, the top-mounted safety is ambidextrous and operates from either side, making the shotgun equally ready for right- or left-handed shooters.


SKU: 120921081 • Width: 7.7in • Height: 2.7in • Depth: 43in • Weight: 9.15oz





Availability: In Stock
The Mossberg 590S optic-ready 12 gauge pump-action shotgun brings genuine versatility to home defense, sport shooting, and tactical applications. Built on the proven Mossberg platform, the 590S stands out for one core feature: it cycles 1.75-inch short shells, 2.75-inch standard shells, and 3-inch magnum loads interchangeably—no adapters, no swapping out the magazine tube, no guesswork. Load whatever combination of shell lengths fits your mission, and the gun handles them all without adjustment. With a 13-round capacity, 20-inch barrel, and factory-ready optic mount, this is a modern fighting shotgun that doesn't ask you to compromise on ammunition flexibility or firepower.
The action speaks Mossberg reliability: dual extractors, twin action bars, and positive steel-to-steel lockup ensure smooth, snag-free cycling even under hard use. The redesigned elevator bolt, slide, and energy-absorbing bumper smooth out recoil and reduce wear. An ambidextrous safety keeps the gun accessible whether you're left- or right-handed, and the synthetic stock with M-Lok forend is purpose-built for mounting lights, grips, or slings. The matte blue finish on the barrel and receiver resists corrosion and shows a clean, business-like appearance.
Out of the box, the 590S wears a bead sight and ships with a Cylinder Bore Accu-Choke installed—you can swap chokes to tune patterns for your load. The optic-ready top rail accepts most common red-dot sights and magnified optics, letting you outfit it for the job at hand. At 7.25 pounds with a fixed 13.87-inch length of pull, it balances control and pointability. Whether you're running it for home defense, clay sports, or tactical training, the 590S gives you the flexibility to choose your shotshell without choosing a new shotgun.
| Gauge | 12 Gauge |
| Action Type | Pump-Action |
| Chamber | 3" (cycles 1.75", 2.75", and 3" shells) |
| Capacity | 13+1 (with 3" shells); 8+1 (with 2.75" shells); 7+1 (with 1.75" shells) |
| Barrel Length | 20" |
| Barrel Finish | Matte Blue |
| Choke | Accu-Choke System; Cylinder Bore choke installed |
| Sights | Bead sight; Optic-ready rail |
| Stock | Synthetic with M-Lok forend (Black) |
| Length of Pull | 13.87" |
| Overall Length | 41" |
| Weight | 7.25 lbs |
The 590S cycles 1.75-inch short shells, 2.75-inch standard loads, and 3-inch magnum shells—all in the same magazine tube, in any combination you load. No mini-shell adapters or magazine swaps required.
Yes. The 590S ships with a factory-integrated optic-ready rail on top of the receiver designed to accept standard red-dot sights, magnified optics, and other rail-mounted accessories.
A Cylinder Bore Accu-Choke is factory-installed. The Accu-Choke system allows you to change chokes to adjust your shot pattern for different loads and distances.
Yes, the top-mounted safety is ambidextrous and operates from either side, making the shotgun equally ready for right- or left-handed shooters.
SKU: 120921081 • Width: 7.7in • Height: 2.7in • Depth: 43in • Weight: 9.15oz

