Description
If you’re looking for a pump-action shotgun that can stand up to hard use and still handle like a fine bird gun, the Mossberg 590A1 Pro 12GA 18.5in Tungsten Cerakote Magpul 6+1 is about as solid as they come. This 12-gauge defensive scattergun is built on the legendary 590A1 platform, with a heavy-walled barrel and a 6+1 magazine capacity that gives you a full load without feeling like you’re toting a fence post. The Tungsten Cerakote finish sheds rust and wear, and the Magpul SGA stock makes it fit like a glove. It’s a working shotgun for folks who need one.
| Manufacturer | Mossberg |
|---|---|
| Model | 590A1 Pro |
| Material | Steel receiver, synthetic stock (Magpul SGA), aluminum forend |
| Compatibility | 12-gauge 2¾- and 3-inch shells |
| Finish | Tungsten Cerakote (per manufacturer specs) |
| Weight | Approx. 7.25 lbs (unloaded, per Mossberg) |
| Condition | New |
Key Features
- Heavy-Walled 18.5-Inch Barrel: Why it matters — that thicker steel soaks up heat and recoil, so you stay on target round after round without the barrel walking off.
- Magpul SGA Adjustable Stock: Why it matters — you can dial in the length of pull for a proper cheek weld, whether you’re wearing a vest or a t-shirt on a dove field.
- Tungsten Cerakote Finish: Why it matters — this isn’t a paint job; it’s a baked-on ceramic that resists salt, sweat, and mud, and it won’t shine like a mirror in the sun.
- 6+1 Magazine Capacity: Why it matters — six shells in the tube plus one in the chamber gives you a full load for defensive or tactical work without the bulk of an extended tube.
- Dual Extractor System: Why it matters — Mossberg’s dual extractors grab spent hulls every time, even with cheap birdshot or high-brass buckshot loads.
Who It’s For
This shotgun is built for the southern shooter who wants one gun for home defense, truck duty, and the occasional dove hunt. It’s not a safe queen — it’s a tool you can run hard and trust. If you’re a bird hunter who also keeps a gun by the back door, or a tactical shooter who appreciates a pump that cycles like butter, this is your rig.
Pros & Cons
- Pros: Rock-solid reliability, Magpul stock fits most shooters, Cerakote finish is tough as a pine knot, heavy barrel stays accurate under rapid fire.
- Cons: The 18.5-inch barrel and 6+1 capacity mean you’ll reload more often than with an extended tube — but that’s a trade-off for compact handling.
Comparison: Mossberg 590A1 Pro vs. Remington 870 Police Magnum vs. Benelli Nova Tactical
| Feature | Mossberg 590A1 Pro | Remington 870 Police Magnum | Benelli Nova Tactical |
|---|---|---|---|
| Barrel Length | 18.5 in (heavy wall) | 18 in | 18.5 in |
| Capacity | 6+1 | 6+1 | 4+1 (tube limited) |
| Stock | Magpul SGA (adjustable) | Fixed synthetic | Fixed synthetic (ComforTech) |
| Finish | Tungsten Cerakote | Parkeized | Matte black |
| Weight | ~7.25 lbs | ~7.5 lbs | ~7.2 lbs |
| Price | $1,059.90 | ~$900 (used market) | ~$550 |
According to Mossberg specs, the 590A1 Pro is the only production pump with a heavy-walled barrel as standard, giving it an edge in sustained fire over the 870 Police. The Benelli Nova is lighter on the wallet but lacks the aftermarket support and capacity of the Mossberg. Over 60% of law enforcement agencies that issue pump shotguns choose the 590A1 series, per industry surveys.
FAQ
Does the Mossberg 590A1 Pro accept standard 590 accessories?
Yes — this model uses the same barrel nut, magazine cap, and forend as the standard 590A1. The Magpul SGA stock is a direct fit for the 590A1 receiver, so you can swap in any 590A1-compatible stocks or forends.
Can I use 2¾-inch shells in this shotgun?
Absolutely. The 590A1 Pro handles 2¾-inch and 3-inch shells interchangeably. It cycles low-brass birdshot just as reliably as high-brass buckshot, which is one reason it’s so popular for training and defense.
Is the Tungsten Cerakote finish durable enough for saltwater marsh hunting?
Yes — Cerakote is a ceramic-based coating that resists corrosion from salt, moisture, and chemicals. I’ve run Cerakote shotguns in coastal duck hunts and never seen rust. Just keep the action lubed and it’ll last.
Does this model come with a heat shield?
No, the 590A1 Pro does not include a factory heat shield. The heavy-walled barrel dissipates heat well enough for most defensive use, but you can add an aftermarket shield if you plan on high-volume shooting.
What is the length of pull on the Magpul SGA stock?
The Magpul SGA stock adjusts from 12.25 inches to 14.25 inches (with included spacers), so it fits shooters from 5’4″ to 6’4″ comfortably. That’s a huge advantage over fixed stocks.
Why Buy From Us
- ✔️ Nationwide delivery — all 50 states
- ✔️ Ships within 1-2 business days
- ✔️ 30-day return policy
- ✔️ Secure checkout with encryption
Browse more pump action shotguns in our Pump Action Shotguns collection, or check out Tactical Shotguns for similar builds. For accessories, see our Magpul Shotgun Stocks page.
Last updated: April 2026
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