Carlson's Magazine Extension Tube Remington 870, 1100, 11-87, V Max 12 Gauge Parkerized
- Capacity-Rounds:
- 10
- Firearm Make Fit:
- Remington
- Caliber-Gauge:
- 12 Gauge
- Finish-Color:
- Black
- Model:
- Magazine Extension
- Material:
- Steel
- Model Fit:
- 870
A Carlson's Parkerized Magazine Extension Tube for Remington 870, 1100, 11-87, V Max 12 Gauge is a straightforward way to boost your shotgun's firepower when it matters most. Whether you're running defensive drills at home, competing in shotgun sports, or training for duty, this extension threads onto your magazine cap and adds 10 rounds of capacity to your magazine tube. It's built from solid steel with a parkerized finish, engineered to handle repeated loading and the recoil of 12-gauge shotguns without flex or rattle.
The extension includes a spring base clamp with swivel stud attachment point, so you can mount quick-detachable slings for tactical or field carry setups. A high-visibility follower rounds out the package to help you track rounds and diagnose feeding issues. The design is simple and reliable—no modification to your shotgun needed, just thread it on and you're done. Carlson's includes clear assembly instructions, so setup takes minutes.
This tube fits the classic Remington pump and semi-auto lineup: 870 pump-action, 1100 semi-auto, 11-87 semi-auto, and V Max shotguns in 12 gauge. If you've relied on one of these workhorse shotguns and want to stretch your mission capability without swapping firearms, this is a no-fuss upgrade.
Key Features
- Adds 10 rounds to your magazine tube capacity
- Solid steel construction with parkerized finish for durability and corrosion resistance
- Includes spring base clamp and swivel stud for quick-detachable sling attachment
- High-visibility follower for easy round monitoring
- Threaded design—no gunsmithing required
- Fits Remington 870, 1100, 11-87, and V Max 12-gauge shotguns
Specifications
| Gauge | 12 |
| Capacity Added | 10 rounds |
| Material | Solid steel, parkerized |
| Compatible Models | Remington 870, 1100, 11-87, V Max |
| Attachment | Threaded tube (replaces magazine cap) |
| Included Accessories | Spring base clamp, swivel stud, high-visibility follower, instructions |
Frequently Asked Questions
Will this extension fit my Remington shotgun?
Yes, if you own a Remington 870 pump-action, 1100 semi-auto, 11-87 semi-auto, or V Max 12-gauge shotgun. The threaded design threads directly onto your existing magazine cap, replacing it.
What comes in the box?
The package includes the magazine extension tube, a spring base clamp with swivel stud, a high-visibility follower, and assembly instructions.
Can I attach a sling to this extension?
Yes. The included swivel stud allows you to mount a quick-detachable sling for tactical or field carry. A compatible QD swivel is not included but can be purchased separately.
How much capacity does this add?
The extension adds 10 rounds to your magazine tube capacity.

