Wilson Combat Extension Tube 12 Gauge 1rd Black Parkerized with QD Sling Stud for Remington 870/1100/11-87

The Wilson Combat Extension Tube is a one-shot magazine extension purpose-built for 12 Gauge Remington shotguns. Machined to add a single round to the magazine tube for a 5-round total capacity, the SU1 extension replaces the factory magazine cap and installs directly on the Remington 870, Remington 1100, and Remington 11-87.

The tube is finished in Parkerized black for a hard-wearing, corrosion-resistant surface that stands up to hard field use. A Quick-Detach (QD) sling stud is positioned on the front of the tube, giving shooters a clean mounting point for a tactical sling without the need for additional adapters or permanent modifications to the shotgun.

This package ships complete with a high-visibility follower that improves feeding and provides a clear visual reference when the magazine runs empty, along with an extra-power magazine spring and wave washer to ensure reliable cycling across a wide range of 12 gauge loads, from light target ammunition to heavy magnum shells.