Description
The Mossberg 590 Pump 12 Ga 20″ CB 3″, Black Synthetic Stock Black, 8rd is a purpose-built, no-frills pump-action shotgun designed for serious defensive and tactical use. It combines legendary Mossberg reliability with a heavy-walled barrel, a clean-bore design, and an 8-round capacity in a rugged, corrosion-resistant package ready for duty.
Key Features
- Mil-Spec Proven: Built to meet or exceed U.S. Military 3443G specifications for durability and reliability.
- 20″ Heavy-Walled Barrel: Features a clean bore (CB) with no internal choke tubes for fast, unimpeded deployment.
- 8+1 Capacity: The extended magazine tube holds 8 rounds of 2¾” or 3″ 12-gauge shells, plus one in the chamber.
- Ambidextrous Safety: The tang-mounted safety is easily accessible for both right and left-handed shooters.
- Dual Extractors & Steel-to-Steel Lockup: Enhances feeding and ejection reliability under all conditions.
- Black Synthetic Stock: Provides a weather-resistant, durable finish that stands up to hard use and storage.
Specifications & Details
| Specification | Detail |
|---|---|
| Gauge | 12 Gauge (3″ Chamber) |
| Barrel Length | 20 Inches |
| Overall Length | 41.25 Inches |
| Capacity | 8+1 Rounds |
| Stock | Black Synthetic |
| Finish | Matte Blue / Black |
| Weight | Approx. 7.25 lbs |
This configuration is drop-in ready for a wide array of accessories. The pump forend accepts M-LOK compatible attachments, and the receiver is drilled and tapped for optic mounts, making it compatible with popular plates from brands like UTG or EGW. The clean-bore barrel is optimized for defensive slugs and buckshot, delivering consistent patterns without the need to manage choke tubes in a high-stress moment. At $697.47, it represents a direct investment in a tool with a proven lineage.
Who This Shotgun Is For
This is for the individual who prioritizes function over form. It’s for the Missouri homeowner who needs a dependable, hard-hitting tool for securing a property or defending a family—a scenario where second chances aren’t granted. It’s equally suited for the tactical shooter or prepper who demands a shotgun that can endure training, adverse conditions, and still perform. The design philosophy is simple: when the lights go out or you’re facing a threat that requires decisive stopping power, this 590 answers without hesitation. Its 41.25-inch overall length strikes a balance between maneuverability in tight spaces and a full fighting stance.
Pros & Cons
Pros: Unmatched reliability born from military specification. The 20-inch barrel and 8-round capacity offer a potent balance of power and control. The robust construction requires minimal maintenance. The ambidextrous safety and clean-bore barrel simplify operation under pressure. It’s a platform with vast aftermarket support for stocks, sights, and lights.
Cons: The weight, at over 7 pounds, is noticeable—this isn’t a featherweight field gun. The synthetic stock, while durable, may not suit those preferring traditional wood aesthetics. The lack of choke tubes limits its versatility for clay or bird hunting. That said, it excels precisely because it doesn’t try to be everything; it’s a specialist.
Frequently Asked Questions
Q: What does “Clean Bore” (CB) mean on the barrel?
A: It means the barrel has a cylinder bore with no internal choke constriction or threads for choke tubes. This is ideal for firing rifled slugs and standard buckshot at shorter ranges typical of defensive use, ensuring nothing impedes the shot’s path.
Q: Can I add a magazine tube extension to increase capacity?
A: No, the magazine tube is already extended to its maximum functional length for this 20-inch barrel model, giving you the full 8+1 capacity. The design is optimized as-is, and further extensions are not possible or necessary.
Q: Is it ready for a flashlight or sling?
A: Yes. The synthetic forend can be replaced with numerous aftermarket options featuring integrated M-LOK or Picatinny rails for mounting lights and grips. The stock includes a sling swivel stud, and the front swivel is attached to the magazine cap, making it sling-ready out of the box.
This Mossberg 590 Pump 12 Ga 20″ CB 3″, Black Synthetic Stock Black, 8rd is available at firearms-missouri.com for Missouri residents and nationwide. FFL transfer required for firearm purchases. See the full product details to secure this proven defensive platform.
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