This Carlson’s extension tube (mfr. part no. 04506) adds 7 rounds of capacity to a 12-gauge Remington 870, 1100, 11-87, Versa Max, or V3 shotgun. It threads on in place of the factory magazine cap.

Key Specifications

• Adds 7 rounds to your shotgun’s magazine capacity.
• Chambered for 12-gauge shells.
• Fits the Remington 870, 1100, 11-87, Versa Max, and V3.
• Constructed of blued solid steel.
• Includes a spring.
• Includes a base clamp.
• Includes a high-visibility follower.
• Threaded tube design replaces the factory magazine cap.
• Overall length of approximately 12.5 inches.
• Manufactured by Carlsons.

Frequently Asked Questions

Which shotguns does this extension fit?

The Remington 870, 1100, 11-87, Versa Max, and V3, all in 12 gauge.

What comes included with the extension?

A spring, base clamp, and high-visibility follower, plus installation instructions.

Buy the Carlson’s Remington 870 Extension Tube

Shop the Carlsons lineup or browse our full Shotgun Magazines selection to find the right fit for your firearm.