Description
The Wilson Combat 2-shot extension tube is a straightforward capacity upgrade that brings your compatible Remington from 4+1 to 6+1 rounds. It's made from steel with a parkerized finish that resists corrosion, making it ready for everything from the range to rough field conditions.
What You Get With This Extension Tube
The kit comes fully loaded for installation: the steel tube itself, an extra-power magazine spring, and a high-visibility follower. That follower makes it easy to tell at a glance whether your magazine is empty, which matters when you're in the flow of shooting. The extra-power spring is built to handle feeding through all types of loads, from light target rounds to magnum shells. The parkerized finish on the steel provides that classic tactical look while protecting against wear and rust.
Fits Remington 870, 1100, and 1187
This extension is engineered specifically for these three models, so you get a secure, reliable fit without guessing. Installation is straightforward once you have the right setup, though some older 870 models may have magazine tube detents that need attention for the follower to seat properly. If you've got a newer shotgun in good shape, you should be good to go.
Wilson Combat's reputation for reliability comes from serious use. Their extensions have been selected by federal agencies because they hold up under actual duty conditions. If you're building a shotgun for sport, defense, or hunting, this is a no-nonsense piece that delivers.
Key Specifications
- Gauge: 12 Gauge
- Capacity Increase: +2 Rounds
- Compatible Models: Remington 870, 1100, 1187
- Material: Steel
- Finish: Parkerized Black
- Includes: Extension Tube, Extra-Power Spring, High-Visibility Follower, Wave Washer
- Manufacturer: Wilson Combat
- Manufacturer Part Number: SGETU2
- UPC: 874218005641
- Type: Magazine Extension
What’s Included
- Extension tube (steel with parkerized finish)
- Extra-power magazine spring
- High-visibility follower
- Wave washer
Frequently Asked Questions
Will this extension tube fit my Remington 870?
Yes, this extension is designed specifically for the Remington 870, 1100, and 1187. Depending on the age and condition of your shotgun, you may need to file down magazine tube detents to allow the follower to seat properly, particularly on older models. This is a straightforward gunsmithing task if needed.
Do I need to replace the magazine spring?
The Wilson Combat extension comes with an extra-power spring that's built to handle all types of 12 gauge loads. You can use it right out of the box, though some people prefer to adjust or modify spring tension based on their specific ammunition preference.
What does the high-visibility follower do?
The follower sits at the top of your ammunition stack inside the magazine tube. The high-visibility design makes it easy to see at a glance whether your magazine is loaded or empty, which is helpful when you're managing your shot count during shooting sessions.
Is the parkerized finish durable?
Parkerized is a proven military-grade finish that creates a protective layer against rust and corrosion. It's not shiny like bluing, but it's tougher in harsh conditions. The matte black appearance also keeps light from reflecting off your shotgun.





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