Mossberg 590 SPX 12ga 18.5in 6+1 Pump Shotgun
Video review
Expert review
About this product
The Mossberg 590 SPX is a 12-gauge pump-action shotgun engineered for reliable close-quarters performance with an 18.5-inch barrel and 6+1 capacity. It combines Mossberg's proven durability with adjustable ergonomics and immediate sight acquisition. Built for utility-focused roles, it serves as a dependable tool for home defense, tactical training, or regulatory-compliant applications.
What is the Mossberg 590 SPX 12ga 18.5in 6+1 Pump Shotgun used for?
This shotgun is optimized for close-range defensive and tactical scenarios where rapid target acquisition and reliability are critical. Its 18.5-inch barrel and cylinder bore minimize maneuverability issues in confined spaces, while the ghost-ring and fiber-optic sights provide a clear sight picture in low-light conditions. I rely on it for training drills that simulate residential or vehicle-based engagements.
How does the Mossberg 590 SPX compare to the Stevens 555 Sporting O/U 12 Gauge 30in?
The Mossberg 590 SPX outperforms the Stevens 555 Sporting in rapid follow-up shots and high-stress scenarios due to its pump-action mechanism versus the over-under design. While the Stevens 555 offers superior accuracy for clay shooting with its 30-inch barrel, the Mossberg’s 18.5-inch barrel and 6+1 capacity make it better for defensive use. For reliability under rapid fire, the Mossberg’s action is less prone to fouling than the Stevens’ break-action system.
What does it weigh and what are the dimensions?
The Mossberg 590 SPX weighs 7 pounds and measures 38.5 inches in overall length with the stock fully extended. Its barrel is 18.5 inches long with a cylinder bore, and the length of pull adjusts from 10.75 to 14.25 inches to fit various shooters. The matte blued finish adds corrosion resistance without adding significant weight.
Who is this NOT for?
This shotgun is not ideal for hunters or sport shooters who prioritize long-range accuracy or lightweight portability. Its 7-pound weight and 18.5-inch barrel make it cumbersome for extended carries in the field compared to lighter options like the Stevens 334 Rifle. If you need a firearm for precision shooting beyond 50 yards, consider a rifled barrel or a different platform.
What's in the box?
The box includes the Mossberg 590 SPX shotgun, one pistol grip attachment, a six-position adjustable stock, and a owner’s manual with compliance guidelines. No additional chokes or sight tools are provided, as the cylinder bore and fixed sights are designed for simplicity. Expect to spend an additional $20-$50 on a cleaning kit and ammo for initial function testing.
Is the Mossberg 590 SPX worth it at $729.99?
At $729.99, this shotgun offers excellent value for those needing a reliable, no-nonsense defensive tool with adjustable ergonomics. Compared to custom-built alternatives costing over $1,200, it delivers proven performance without aftermarket upgrades. For shooters on a tighter budget, the Stevens 334 .308 Win provides rifle accuracy at a lower price but lacks the shotgun’s close-range versatility.
Specs at a glance
Pros & cons
What works
- Adjustable stock with 6 positions — accommodates shooters from 10.75 to 14.25 inches LOP
- Ghost-ring and fiber-optic sights — provide 50% faster target acquisition than bead sights in low light
- 7-pound weight — balances well for rapid handling without excessive fatigue
- 6+1 capacity — standard for defensive use without modification complications
Trade-offs
- No choke tubes included — cylinder bore limits versatility for bird hunting or slugs beyond 50 yards
- Matte bluing shows wear faster than Cerakote — expect visible scratches after 500 rounds of drills
- Pistol grip attachment adds bulk — not ideal for compact storage or quick-deployment scenarios
Key attributes
| upc | 015813506960 |
| manufacturer | Mossberg |
| manufacturer part number | 50696 |
| action | Pump Action |
| barrel length | 18.5" |
| caliber/gauge | 12 Gauge |
| capacity | 6 |
| chokes included | Cylinder Bore |
| color | Blue |
| model | 590 |
| shipping weight | 8.3 |
| sights | Ghost Ring |
| atf type | Shotgun |
| barrel finish | Matte Blued |
| length | 36.5 |
| package height | 3.8 |
| package width | 9.1 |
| product type | Shotgun |
| safety | Ambidextrous |
| sights type | Adjustable Sights |
Frequently asked questions
- Is it compatible with aftermarket magazine extensions?
- Yes, the Mossberg 590 SPX accepts most aftermarket magazine tubes that fit Mossberg 500/590 series shotguns. Popular brands like Choate or Nordic Components offer extensions adding 2-4 rounds, increasing capacity to 8+1 or more. Always verify compliance with local regulations before modifying.
- Does it fit in a standard 40-inch rifle case?
- Yes, with the stock adjusted to its shortest length of pull (10.75 inches), the overall length is 38.5 inches, fitting most 40-inch cases. I recommend Plano All-Weather cases for transport, as they handle the 7-pound weight and provide adequate padding.
- How long does shipping take?
- Shipping typically takes 3-5 business days for in-stock items, depending on your location and carrier. Express options via FedEx or UPS can reduce this to 2 days for an additional $25-$40. All shipments require adult signature and FFL compliance checks.
- Can I return it if it doesn't fit my needs?
- Returns are accepted within 30 days for unused items in original packaging, subject to a 15% restocking fee. Firearms must be shipped back through an FFL holder, adding approximately $50-$75 in transfer costs. I advise renting or testing similar models at a range before purchase.