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Remington 870 Magazine +2 Extension Kit

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Increase Your Rem 870’s Capacity with XS Sights!

Are you looking to boost the capacity of your standard Remington 870 shotgun? Look no further than XS Sights' innovative DIY +2 Kit. Our extension kit is designed to be easily installable, lightweight, and provides the added tactical upgrades you desire. With two kit options available, you can choose the perfect fit for your needs.

The first kit includes our detent tool, allowing you to swiftly remove the factory detents, along with the 45" Wolff 12 ga extended spring and the plus two extension tube. Alternatively, the second kit consists of the 45" Wolff 12 ga extended spring and the plus two extension tube, catering to those who don’t have a detent to remove. Whichever option you choose, rest assured you'll experience enhanced performance and efficiency with your Remington 870 shotgun.

Durable Design for Superior Performance

We take pride in crafting our extension kit with precision and durability in mind. The one-piece design is meticulously machined from 6061 aluminum and is hard coat anodized, ensuring longevity and reliable performance. Not only does the aluminum construction make the extension lightweight, but it also offers advantages over traditional steel tubes.

Measuring 6 inches, the extension is perfectly sized to fit your shotgun without extending past the barrel on a standard four-round capacity shotgun tube. The extension's tip features wrench flats, providing a secure tightening method for peace of mind during your shooting sessions.

Versatility + Compatibility

At XS Sights, we understand the importance of customization and compatibility. That's why our extension tube is machined to accept standard barrel clamps, offering additional support and the option to attach a sling. Whether you prefer a classic setup or a more tactical approach, our extension kit allows you to tailor your Remington 870 shotgun to your preferences.

We’ve tested our extension kit with various aftermarket upgrades, and it seamlessly works with reputable brands such as Vang Comp, Nordic Components, and Wilson Combat. You can trust that our extension kit will integrate perfectly with your chosen upgrades, enhancing your shooting experience even further.

Check out our written installation instructions for a smooth and straightforward setup process, and for further insights and tips, read this article & install by ShootOn.

Unleash the full potential of your Remington 870 Shotgun with the XS Sights Magazine +2 Extension Kit!



Prop 65 warning WARNING: This product can expose you to lead, which is known to the State of California to cause cancer and birth defects or reproductive harm. (For more information go to

Non-Tritium Products — XS Sights warrants all non-tritium products to be free from defects in material and workmanship. This warranty applies only to the original purchaser. Proof of purchase is required for an RMA. If this product is found to be defective, the manufacturer's only obligation is to replace the product at the manufacturer's discretion, provided that the product has not been damaged through misuse, modifications, neglect, or mishandling. This warranty shall not apply to the finish on any portion of the product or weathering, as this is considered normal wear and tear. Sights improperly installed are not subject to warranty. — XS Sights only warrants products sold through authorized resellers. — All international sales are final and do not qualify for this warranty policy. Some authorized international resellers carry common warranty items to provide for their customers. For more information, please see our International Shipping Policy.