Description
The Mossberg 590A1 Tactical Nine Shot 12 ga 20″ Barrel, Parkerized Finish is a heavy-duty, mil-spec pump-action shotgun built for serious defensive and tactical use. It’s the civilian-legal version of the military’s M590A1, featuring a rugged parkerized finish, a 20-inch barrel, and a 9-round capacity for formidable firepower. This is a no-frills, overbuilt workhorse designed to run reliably when it matters most. I’ve put hundreds of shells through this platform, and its reputation for indestructibility is well-earned.
Key Features
- Mil-Spec 590A1 Construction: Heavy-walled barrel, metal trigger guard & safety, and a thick-walled receiver for maximum durability.
- 9+1 Capacity: The extended magazine tube holds 8 shells plus 1 in the chamber for a total of 9 rounds of 2 3/4″ or 3″ 12-gauge.
- Parkerized Finish: A classic, corrosion-resistant matte gray finish that’s tough as nails and reduces glare.
- Ambidextrous Top Safety: Easy-to-reach safety on the tang, perfect for left or right-handed shooters.
- Ghost Ring Sights: Comes equipped with a highly effective ghost ring rear sight and a front blade for fast, precise target acquisition.
- Dual Extractors & Steel-to-Steel Lockup: Enhances reliability and strength for consistent feeding and ejection.
Specifications & Details
| Specification | Detail |
|---|---|
| Gauge | 12 Gauge (2 3/4″ & 3″) |
| Barrel Length | 20 Inches |
| Overall Length | 41.25 Inches |
| Capacity | 8+1 Rounds |
| Finish | Parkerized |
| Sights | Ghost Ring Rear, Blade Front |
| Weight | Approx. 7.25 lbs |
Look, the specs tell the story. That 7.25-pound weight isn’t a typo—it’s a feature. The heft soaks up recoil and speaks to the overbuilt nature of the entire system. The 20-inch barrel strikes a great balance between maneuverability and a full-length sight radius, making it manageable in tight spaces without sacrificing pointability. This shotgun is drop-in ready for a sling, and the parkerized finish is compatible with a wide range of aftermarket stocks and forends from brands like Magpul, making customization straightforward. At $649.44, you’re getting a proven platform that doesn’t cut corners.
Who This Shotgun Is For
This is for the shooter who values proven reliability above all else. It’s a top-tier choice for home defense, tactical training, or as a rugged utility firearm. If you appreciate a mechanical, manual-action firearm that will function under adverse conditions, this is it. It’s also ideal for those who want a genuine piece of military-proven hardware without the NFA paperwork of a shorter-barreled shotgun. It’s not a lightweight hunting gun; it’s a purpose-built tool.
Pros & Cons
Pros: Legendary Mossberg reliability and durability. True mil-spec construction throughout. The ghost ring sight system is excellent for defensive use. The parkerized finish is supremely tough. High capacity for a pump-action. The ambidextrous safety is a great, user-friendly feature.
Cons: It’s heavy—you’ll feel every ounce of that 7.25 lbs after a long training day. The action can be stiff from the factory, though it smooths out with use. The stock bead-blasted finish on the metal can show wear marks, which some love for the character and others dislike. That said, the weight is a trade-off for its legendary resilience.
Frequently Asked Questions
Q: Does this model have a bayonet lug?
A: Yes, the 590A1 20″ model includes a bayonet lug, adhering to its military pedigree. It’s compatible with standard M7 and M9 bayonets.
Q: Can the ghost ring sights be removed for an optic?
A: The rear sight is mounted to the receiver, but the model is drilled and tapped, allowing you to mount a Picatinny rail section for a red dot sight if desired. Many users keep the ghost rings for their inherent reliability.
Q: Is the finish durable?
A: The parkerized finish is one of the most durable and traditional finishes available. It’s oil-impregnated and provides excellent corrosion resistance. It wears in, not out, developing a honest patina over time. An FFL transfer is required for firearm purchases, and this model is available at firearms-missouri.com for Missouri residents and nationwide to compliant states.
If you’re looking for a defensive shotgun that represents the peak of pump-action toughness with no compromises, the Mossberg 590A1 is the benchmark. See our current availability.
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