Mossberg 50758 590R 12 Gauge Pump 3" 6+1 18.50" Flat Dark Earth Cerakote Heat Shield Barrel, Flat Dark Earth Cerakote Steel Receiver, Black AR Mil-Spec Adjustable Synthetic Stock, Black Magpul Grip

The Mossberg 590R is a modern tactical pump-action shotgun built on a platform that respects the reliability of proven pump designs while introducing features that make it equally at home on the range, in a defensive role, or hunting. This 12-gauge fires 3" shells and holds six rounds in the tube plus one in the chamber, giving you a seven-round total capacity. The 18.5" barrel comes with an integrated heat shield to manage barrel heat during sustained use, and the entire gun is finished in Flat Dark Earth Cerakote—both barrel and steel receiver—for a cohesive, professional appearance that resists corrosion.

What sets the 590R apart from older pump shotguns is its AR-platform ergonomics. A rotary safety selector (ambidextrous, like an AR) replaces the traditional crossbolt, and the stock accepts standard mil-spec buffer tube adapters, meaning you can swap in your choice of commercial AR stocks if you want to customize fit and function. This example comes with a Black Magpul MOE+ grip and a 5-position adjustable synthetic stock with an interchangeable recoil pad, so you're not locked into one setup. The forend is redesigned for cleaner manipulation, the loading port is enlarged and beveled to speed reloads, and dual extractors plus twin action bars ensure smooth, reliable cycling.

The top of the receiver wears a Picatinny rail optimized for AR-style optics, making it straightforward to mount a red dot, scope, or other sight system. Two QD mounting ports on the stock adapter give you quick-detach options for slings or other attachments. This is a shotgun that respects tradition—solid pump-action fundamentals with dual extractors and positive steel-to-steel lockup—but speaks the modern tactical language that many shooters already understand.

Key Features

• 12-gauge, 3" chamber with 6+1 round capacity
• 18.5" barrel with integrated heat shield in Flat Dark Earth Cerakote
• Flat Dark Earth Cerakote steel receiver for unified finish and corrosion resistance
• Ambidextrous AR-style rotary safety selector
• 5-position adjustable synthetic stock with interchangeable recoil pad and two QD ports
• Black Magpul MOE+ pistol grip for secure, ergonomic control
• Mil-spec buffer tube compatible—swap stocks to customize fit
• Top Picatinny rail optimized for AR-optics mounting
• Enlarged, beveled loading port with exposed follower for rapid reloading
• Dual extractors, twin action bars, and anti-jam elevator for reliable pump action

Specifications

Frequently Asked Questions

Can I use this with standard AR-15 stocks and grips?

Yes. The stock base is mil-spec compatible and accepts standard buffer tube stocks. The Magpul MOE+ grip shown comes installed, but you can swap it for other AR-platform grips if you prefer a different angle or material. This modularity is one of the 590R's key advantages over traditional shotguns.

What choke comes with this shotgun?

The 590R uses the Accu-Choke system. The specific choke tube configuration depends on your intended use—consult Mossberg documentation or your retailer for details on which choke is pre-installed.

Is the safety ambidextrous?

Yes. The rotary safety selector is ambidextrous, allowing left- and right-handed shooters to manipulate the safety without repositioning their grip, following AR-15 ergonomic conventions.

What optics can I mount on this shotgun?

The top Picatinny rail is optimized for AR-style optics such as red dots, low-power variables, and other compact sight systems. Standard Picatinny-mount accessories will work; avoid bulky or offset optics that may interfere with the heat shield or forend.