This Carlson’s magazine extension (mfr. part no. 04501) adds 8 rounds of capacity to a 12-gauge Benelli M1, M2, or SBE shotgun using 2.75-inch shells.

Key Specifications

• Adds 8 rounds to your shotgun’s magazine capacity.
• Chambered for 12-gauge, 2.75-inch shells.
• Fits the Benelli M1, M2, and SBE.
• Constructed of blued solid steel.
• Includes a spring.
• Includes a base clamp with swivel stud (works with a QD sling swivel, sold separately).
• Includes a high-visibility follower.
• Threaded tube design replaces the factory magazine cap.
• Overall length of approximately 15.85 inches.
• Manufactured by Carlsons.

Frequently Asked Questions

Will this fit 3-inch magnum shells?

This extension is built for the 8-shot Benelli M1/M2/SBE configuration using 2.75-inch shells.

What’s included with this extension?

A spring, base clamp with swivel stud, high-visibility follower, and installation instructions.

Buy the Carlson’s Benelli Magazine Extension

Shop the Carlsons lineup or browse our full Shotgun Magazines selection to find the right fit for your firearm.