Increasing the capacity of a defensive or range shotgun is one of the most practical upgrades you can make for flexibility in the field. A well-designed magazine extension keeps your balance and handling predictable while adding rounds where it counts, and it should be durable enough to hold up under regular use.

CARLSONS EXTENSION TUBE is a straightforward way to add firepower to compatible Benelli shotguns. Constructed of blued solid steel, this threaded tube replaces your magazine cap and provides the ability to add extra rounds to the magazine. It ships with a spring base clamp and a high visibility follower, and is compatible with 8-shot Benelli 12 gauge M1 M2 SBE SBEII models that use 2.75″ shells. Priced at $73.99, it’s a cost-effective upgrade for shooters seeking extra capacity without complex modifications.

Design and Materials

The blued solid steel construction gives the extension tube corrosion resistance and a hard-wearing finish that matches factory magazine caps. The included spring base clamp secures follower tension and prevents binding under repeated cycling. A high visibility follower helps with loading and quickly verifying that the tube is feeding correctly—especially useful in low-light or high-stress scenarios.

Installation and Compatibility

Simple Fitment

Installation is a matter of removing the existing magazine cap and threading the extension tube in its place. Because the design uses the same threaded interface as the factory cap, you avoid gunsmithing or permanent changes to the firearm.

Model Notes

This extension targets Benelli 12 gauge platforms—M1, M2, SBE, and SBEII—that accept 2.75″ shells and are set up for an 8-shot capacity. Confirm your shotgun model and shell length before purchase to ensure reliable function.

Upgrading capacity is useful for home defense, training drills, and competition formats that allow extended magazines. Remember to check local laws and range rules regarding magazine capacity before installing aftermarket extensions. For durability and predictability, the Carlsons brand has long been noted for practical, no-nonsense shotgun accessories that focus on fit and function.

View product details and pricing to confirm compatibility with your shotgun model and current stock.

Tactical Considerations

Balance, reloading practice, and retention drills should be adjusted when adding weight and length to the magazine tube. The high visibility follower aids in quick reload verification, while the spring base clamp maintains consistent feeding under repeated loads. At $73.99, it’s an accessible upgrade that enhances capability without altering the shotgun’s core ergonomics.

Check current availability and secure the CARLSONS EXTENSION TUBE through our shop page where you can complete purchase via the retailer.

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