Blued steel magazine extension for Benelli M4 12-gauge shotguns. Adds 2 rounds to factory capacity. Includes spring, base clamp with swivel stud, and high-visibility follower. Threaded design replaces magazine cap.
Fits: Benelli M4
Expand your Benelli M4's firepower with this purpose-built magazine extension. Constructed from solid blued steel, this extension is engineered for reliability in demanding situations—whether you're focused on home defense, tactical training, or competition shooting.
Increased Capacity: Adds 2 rounds to your M4's standard magazine, bringing total capacity to 7 rounds.
Solid Construction: Machined from blued steel for durability and corrosion resistance.
Quick-Detach Ready: Swivel stud accommodates standard quick-detachable sling attachments (sling not included).
Easy Installation: The threaded tube simply replaces your factory magazine cap—no gunsmithing required.
High-Visibility Design: The follower makes it easy to see round count at a glance.
Home defense setups, tactical training, 3-gun competition, and law enforcement applications where additional ammunition capacity provides a tactical advantage.
Carlson's magazine extensions are built to exacting standards and have earned respect among serious shotgun users for their reliability and fit.