Remington Model 870 Special Purpose Marine Magnum 12 Gauge
The Remington 870 Special Purpose Marine Magnum is a highly durable 12-gauge utility gun that resists corrosion on land or water. Electroless nickel plating covers all metal, including the inside of the barrel and receiver. The synthetic stock has generous checkering for positive control. Comes with 18 1/2″ Cylinder barrel with single-bead front sight, six-round magazine, padded Cordura® and sling swivel studs.
Firearm Features
- Receiver milled from a solid billet of steel
- Legendary pointability and accuracy for strength and durability
- Twin action bars ensure smooth, reliable non-binding action
- Legendary pointability and accuracy
Firearm Specifications
- Order Number: 25012
- Gauge: 12 Gauge
- Capacity: 6
- Barrel Length: 18.5″
- Overall Length: 38.5″
- Barrel Type: Cylinder Choke
- Sights: Single Bead
- Receiver Finish: Electroless Nickel-Plated
- Length of Pull: 14″
- Drop (Comb): 1.5″
- Drop (Heel): 2.5″
Remington Model 870 Special Purpose Marine Magnum 12 Gauge
The Remington Model 870 Special Purpose Marine Magnum 12 Gauge is engineered for the harshest environments on earth—saltwater, extreme humidity, and unforgiving conditions that destroy lesser firearms. Designed specifically for boaters, coastal security, maritime law enforcement, and home defenders who want maximum rust resistance and unmatched reliability, this Marine Magnum version elevates the legendary Remington Model 870 platform to a new level of corrosion-proof performance.
Built with a nickel-plated finish on all major metal components, the Marine Magnum is the ultimate defensive shotgun for anyone who needs a shotgun that will function reliably when exposed to moisture, salt, or long-term storage situations.
Legendary Remington Model 870 Reliability—Upgraded for Marine Duty
The Remington Model 870 is the most proven pump-action shotgun in history. With millions sold and decades of military and law-enforcement use behind it, the 870 platform is known for its rock-solid performance, smooth cycling, and rugged steel receiver.
The Special Purpose Marine Magnum takes this legendary design and enhances it for maximum longevity in corrosive environments.
Key durability enhancements include:
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Electroless nickel-plated receiver, barrel, and magazine tube
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Corrosion-resistant internal components
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Synthetic stock and fore-end for moisture immunity
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Stainless steel hardware where applicable
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Heavy-duty action and robust dual action bars
This model is built to withstand exposure that would cause rust or mechanical failure in standard shotguns. Whether at sea, stored on a boat, kept in a coastal home, or used in wet climates, the Marine Magnum will outperform and outlast most defensive firearms in its category.
12-Gauge Power for Serious Defensive Capability
Chambered in 12 gauge, the Remington Model 870 Marine Magnum delivers uncompromising defensive capability. Whether used for home protection, maritime security, or property defense, this shotgun accepts a wide variety of shells:
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00 buckshot
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Tactical reduced-recoil loads
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Birdshot for training
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Slugs for extended range
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Specialty marine and defensive ammunition
The flexibility of 12-gauge ammunition, paired with the 870’s ultra-reliable pump-action system, gives shooters complete control and dependable performance in life-and-death situations.
Smooth Pump-Action Operation
Like all Remington Model 870 shotguns, the Marine Magnum features the renowned dual-action bar pump design that prevents twisting, binding, or jamming. This ensures:
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Fast follow-up shots
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Reliable feeding under pressure
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Easy operation in wet or slippery conditions
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Confidence-inspiring cycling even with gloves
Even when soaked in water or exposed to salt, the Marine Magnum continues to operate smoothly where other shotguns might fail.
Special Purpose Configuration for Tactical Use
The Marine Magnum isn’t just corrosion-resistant—it’s also optimized for tactical performance. The 18.5-inch barrel offers exceptional maneuverability in hallways, tight cabins, and confined areas where defensive shotguns excel.
Tactical features commonly include:
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18.5-inch barrel for close-quarters control
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Extended magazine tube (6+1 capacity)
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Bead front sight for quick target acquisition
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Non-glare nickel finish ideal for low-light situations
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Sling swivel studs for mounting defensive slings
Together, these components create a high-performing defensive platform suitable for both home defense and maritime applications.
Built for Boaters, Coastal Homes, and Marine Professionals
Where most firearms quickly rust or seize in salty air, the Remington Model 870 Special Purpose Marine Magnum 12 Gauge stands firm. This shotgun is the go-to choice for:
✔ Boat Owners
Perfect for keeping aboard in case of emergencies, intruders, or maritime threats.
✔ Coastal Homeowners
Humidity and salt air are no match for the nickel-plated Marine Magnum.
✔ Law Enforcement & Security
Ideal for harbor patrols, marine units, and water-based security operations.
✔ Home Defense Users
Short, maneuverable, powerful, and designed to function in any condition.
✔ Collectors & Enthusiasts
A unique and visually striking 870 variant with a reputation for toughness.
Why Buy the Remington Model 870 Special Purpose Marine Magnum 12 Gauge?
✔ True corrosion-resistant design for marine environments
✔ Smooth, dependable Remington Model 870 pump-action performance
✔ Durable nickel-plated finish for long-term protection
✔ 12-gauge versatility for defense and tactical use
✔ Heavy-duty components for exceptional durability
✔ Compact, maneuverable barrel ideal for close quarters
✔ A highly reliable defensive shotgun trusted by professionals
Order Your Remington 870 Marine Magnum Today
The Remington Model 870 Special Purpose Marine Magnum 12 Gauge offers unrivaled corrosion resistance and tactical performance in a proven, dependable platform. Whether you need a shotgun for boating, coastal defense, or general home protection, this Marine Magnum model delivers long-term reliability where other firearms cannot survive.
Limited availability—order your Marine Magnum today while inventory lasts.



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