The Wilson Combat One-Shot Magazine Extension Tube for Remington 870/1100/11-87 (part no. SGETQDSU1) increases magazine capacity to 5 rounds total on 12-gauge Remington 870/1100/11-87 shotguns. Wilson Combat (Scattergun Technologies) builds it with a quick-detach sling stud on the front of the tube, ships it with an extra-power magazine spring and a high-visibility follower, and finishes it in Parkerized for corrosion resistance — the same tube extensions selected for use by the U.S. Secret Service and U.S. Border Patrol. Note: the follower is not grooved for newer 870 magazine tubes, so the tube’s detent may need filing for fitment on those guns.

Key Specifications

• Fits 12-gauge Remington 870/1100/11-87 shotguns.
• Adds 1 round of capacity, for 5 rounds total.
• Includes a quick-detach sling stud mounted on the front of the tube.
• Ships with an extra-power magazine spring and a high-visibility follower.
• Parkerized finish for corrosion resistance.
• Selected for use by the U.S. Secret Service and U.S. Border Patrol.
• Follower is not grooved for newer 870 magazine tubes; the tube’s detent may need filing for fitment on those guns.
• Includes a wave washer.
• Manufactured by Wilson Combat.

Frequently Asked Questions

What does this extension tube fit? 12-gauge Remington 870, 1100, and 11-87 shotguns.

How much capacity does it add? One round, bringing total magazine capacity to 5 rounds.

What’s included? The extension tube with a quick-detach sling stud, an extra-power magazine spring, a high-visibility follower, and a wave washer — ready to install.

Buy the Wilson Combat One-Shot Magazine Extension Tube for Remington 870/1100/11-87

Order the Wilson Combat One-Shot Magazine Extension Tube for Remington 870/1100/11-87 from our Lubbock, Texas gun shop for fast shipping. Browse more shotgun magazines at Schaefer Defense.