Scattergun Technologies 2-Round Magazine Tube Extension with QD Sling Stud & Vertical Sling Mount for Remington 870/1100/11-87 12 Gauge - Parkerized

If you run a Remington 870, 1100, or 11-87 in 12 gauge and need a reliable way to carry more rounds on the gun itself, the Scattergun Technologies 2-Round Magazine Tube Extension delivers practical capacity gain without over-complicating your shotgun. Built by Scattergun Technologies—the outfit trusted enough to outfit U.S. Secret Service and Border Patrol crews—this extension adds two shots to your magazine tube and bolts on a quick-detach sling stud plus vertical sling mount so you can rig your gun for tactical work, home defense, or specialized hunting without fumbling with separate attachment points.

The extension ships with an extra-power magazine spring tuned for reliable feeding under real-world conditions, and a high-visibility follower so you can see at a glance whether the tube is loaded or dry. That follower is designed to work with classic 870 tubes (note: it won't fit the grooved mag tubes found on newer 870 models). A wave washer is included to keep everything locked tight. The parkerized finish is business-like—durable, matte, and resistant to corrosion without any shine to catch light.

This is the kind of gear that doesn't need marketing hype; it earns its reputation through hard use and proven reliability. Whether you're building a home-defense shotgun, setting up for 3-gun, or just want faster reloading in the field, a magazine extension that integrates a sling attachment point saves you money and simplifies your platform.

Key Features

• Adds 2 rounds to magazine capacity for Remington 870, 1100, and 11-87
• Integrated quick-detach sling stud and vertical sling mount
• Extra-power magazine spring for positive feeding
• High-visibility follower for reliable operation and empty-tube reference
• Parkerized finish for durability and corrosion resistance
• Wave washer included for secure attachment
• Trusted by U.S. Secret Service and Border Patrol

Specifications

Frequently Asked Questions

Will this fit my Remington 870?

Yes, this extension is designed for Remington 870, 1100, and 11-87 shotguns in 12 gauge. However, the follower is not compatible with the grooved magazine tubes found on newer 870 models, so verify your tube style before ordering.

What's included in the box?

The kit includes the magazine tube extension, quick-detach sling stud, vertical sling mount, an extra-power magazine spring, a high-visibility follower, and a wave washer.

Why would I add a sling mount to my mag extension?

Integrating the sling attachment into the extension simplifies your shotgun setup and saves you the cost and complexity of sourcing separate hardware. It's ideal for tactical, home-defense, or 3-gun builds where you want sling capability without extra modifications.

How much capacity does this add?

This extension adds 2 rounds to your magazine tube capacity.