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Mossberg 590 Series

The Battle-Proven Standard for Duty and Security

Built on decades of military and law enforcement service, the Mossberg 590 platform represents the pinnacle of pump-action reliability. As a heavy-duty counterpart to the classic 500 model, the 590 series features an open-ended magazine tube for easy cleaning, dual extractors, twin action bars, and an ambidextrous top-tang safety that makes it an incredibly intuitive choice for home defense and tactical operations.

  • Ambidextrous Top-Tang Safety: Mounted directly on top of the receiver, providing highly visible, quick-to-engage operation for both left and right-handed shooters.
  • Dual Extractors & Anti-Jam Elevator: Engineered with twin mechanical extractors and a smooth lifting elevator mechanism to ensure flawless, positive shell cycling every time.
  • Clean-Out Magazine Cap: Designed with a threaded, open-ended magazine tube layout that allows for fast spring maintenance and easy internal cleaning in the field.

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Mossberg 590 Variant Specification Guide

590 Variant Barrel Profile & Length Standard Capacity Receiver / Trigger Guard Shell Compatibility Core Application
590 Tactical Standard 18.5" or 20" 6 to 9 Rounds Aluminum / Polymer Guard 2.75" and 3" Shells Home Defense / Personal Security
590A1 Mil-Spec Heavy-Walled 18.5" or 20" 6 to 9 Rounds Aluminum / Metal Trigger Guard 2.75" and 3" Shells Military Duty / Law Enforcement Operations
590 Shockwave Standard 14.375" (Bird's Head Grip) 5 to 6 Rounds Aluminum / Polymer Guard 2.75" and 3" Shells Compact Vehicle Carry / Tight Spaces
590S Series Standard 18.5" or 20" Up to 13 Rounds (Mini-shells) Aluminum / Polymer Guard 1.75", 2.75", and 3" (Any Mix) High-Capacity Defense / Versatile Plinking

Mossberg 590 Frequently Asked Questions

Q: What is the main difference between a standard Mossberg 590 and the 590A1?
The 590A1 is built specifically to meet strict military duty specifications (Mil-Spec 3443E). It features a heavy-walled barrel profile designed to withstand harsh field abuse, an aluminum alloy metal trigger guard, and a metal safety button instead of the standard polymer components found on tactical models.
Q: What makes the Mossberg 590S variant unique regarding ammunition?
The 590S features a completely redesigned internal feeding elevator and loading port framework. Unlike traditional models that require aftermarket plastic adapter plugs to run short ammunition, the 590S cycles 1.75" mini-shells, standard 2.75" shells, and 3" magnum shells simultaneously and seamlessly in any mixed order.
Q: Is the Mossberg 590 Shockwave considered a short-barreled shotgun (SBS)?
No, legally it is not. Because it features a specialized 14-inch barrel paired from the factory with a bird's head grip that brings the total length past 26 inches—and has never been fitted with a shoulder stock—the Shockwave is classified under federal law as a non-NFA "Firearm" rather than a shotgun, requiring no tax stamp to own.
Q: Can I mount barrels from a standard Mossberg 500 onto a Mossberg 590 receiver?
No, they are completely incompatible. A standard Mossberg 500 barrel locks in place using a built-in lug screw that threads directly into the closed front end of its magazine tube. Conversely, the Mossberg 590 uses an open-ended tube layout where the barrel slides over the magazine ring and is anchored securely from the outside by a heavy magazine cap nut.
revolver barrel loading graphic

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