Carlson's Magazine Extension Tube Benelli M4 12 Gauge 7-Round Parkerized

The Carlson's Magazine Extension Tube for Benelli M4 12 Gauge adds serious magazine capacity to your M4 platform shotgun. This 7-round extension replaces your factory magazine cap, giving you the firepower boost you need for home defense, tactical training, or competitive shooting without replacing the entire gun. Built from solid steel with a parkerized finish, it's made to handle hard use and maintain a low-profile aesthetic.

Installation is straightforward—the threaded tube screws onto your magazine tube, and everything you need to get started comes in the box. Carlson's includes a spring base clamp with swivel stud, so you can attach a quick detachable sling (QD swivel sold separately) if your setup calls for it. The high-visibility follower makes it easy to see round count at a glance, and the whole assembly is designed to function reliably cycle after cycle.

Whether you're running your M4 for home protection, three-gun competition, or tactical training, this extension keeps you in the fight longer between reloads. The parkerized steel construction resists corrosion and plays well with modern shotgun setups, and the design respects the ergonomics of the Benelli platform.

Key Features

• Increases magazine capacity to 7 rounds for Benelli M4 12 gauge
• Solid steel construction with parkerized finish for durability and corrosion resistance
• Includes spring base clamp and swivel stud for sling attachment
• High-visibility follower for easy round counting
• Threaded design for secure installation; replaces factory magazine cap
• Suitable for home defense, competition, and tactical use

Specifications

Frequently Asked Questions

Will this extension fit my Benelli M4 shotgun?

Yes, this tube is specifically designed for the Benelli M4 12 gauge platform. It threads onto your existing magazine tube and replaces the factory magazine cap.

What's included in the box?

The extension comes with the tube itself, a spring base clamp, a swivel stud for sling attachment, and a high-visibility follower. You'll need a quick detachable swivel (sold separately) if you want to run a QD-compatible sling setup.

Is installation difficult?

No. The threaded design is straightforward to install—it simply replaces your magazine cap. Carlson's includes easy-to-follow instructions.

Can I use this for home defense?

Yes. This extension is well-suited for home defense setups, as well as tactical training and competition shooting. The increased capacity gives you more rounds without swapping guns.