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Charter Arms
The Carl Mag Extension for Benelli M1/M2 20GA boosts your shotgun's capacity from the factory standard to 8 rounds, giving you more firepower without swapping guns. Built from blued solid steel, this magazine extension threads onto your shotgun in place of the standard mag cap—a straightforward swap that takes minutes. Whether you're running a Benelli M1, M2, or compatible Franchi 20-gauge, this extension is purpose-built to feed reliably and last.
Magazine extensions are popular with home-defense shooters, 3-gun competitors, and anyone who values having extra rounds on tap. The 8-round capacity keeps your gun lean and handy compared to drum mags, while still giving you a meaningful advantage in capacity. Installation is tool-free; the threaded design means no gunsmithing required.
The extension comes with a spring base clamp and swivel stud (included), so you're ready to mount a quick-detachable sling attachment if you choose—or run it without. A high-visibility follower helps you see round count at a glance, and setup instructions are included in the box. This is the kind of upgrade that transforms a factory shotgun into a serious working gun.
| Gauge | 20GA |
| Capacity | 8 rounds |
| Compatible Shotguns | Benelli M1, M2, and Franchi |
| Material | Blued solid steel |
| Included Accessories | Spring base clamp, swivel stud, high-visibility follower |
Yes. The Carl Mag Extension is designed specifically for Benelli M1/M2 and compatible Franchi 20-gauge shotguns. It threads directly onto your magazine cap with no modifications needed.
The extension includes the threaded steel tube, a spring base clamp, a swivel stud for quick-detachable sling mounts, and a high-visibility follower. Instructions for installation are also included. A quick-detachable swivel itself is not included—you'll source that separately if you want to use the stud for sling attachment.
No. The threaded design means you simply unscrew your factory magazine cap and thread the extension on in its place. It's a user-level installation that takes a few minutes and no special tools.
Yes. The 8-round capacity and reliable steel construction make it equally useful for home protection, 3-gun competition, tactical training, or any serious shotgun application where extra rounds matter.
Charter Arms
The Carl Mag Extension for Benelli M1/M2 20GA boosts your shotgun's capacity from the factory standard to 8 rounds, giving you more firepower without swapping guns. Built from blued solid steel, this magazine extension threads onto your shotgun in place of the standard mag cap—a straightforward swap that takes minutes. Whether you're running a Benelli M1, M2, or compatible Franchi 20-gauge, this extension is purpose-built to feed reliably and last.
Magazine extensions are popular with home-defense shooters, 3-gun competitors, and anyone who values having extra rounds on tap. The 8-round capacity keeps your gun lean and handy compared to drum mags, while still giving you a meaningful advantage in capacity. Installation is tool-free; the threaded design means no gunsmithing required.
The extension comes with a spring base clamp and swivel stud (included), so you're ready to mount a quick-detachable sling attachment if you choose—or run it without. A high-visibility follower helps you see round count at a glance, and setup instructions are included in the box. This is the kind of upgrade that transforms a factory shotgun into a serious working gun.
| Gauge | 20GA |
| Capacity | 8 rounds |
| Compatible Shotguns | Benelli M1, M2, and Franchi |
| Material | Blued solid steel |
| Included Accessories | Spring base clamp, swivel stud, high-visibility follower |
Yes. The Carl Mag Extension is designed specifically for Benelli M1/M2 and compatible Franchi 20-gauge shotguns. It threads directly onto your magazine cap with no modifications needed.
The extension includes the threaded steel tube, a spring base clamp, a swivel stud for quick-detachable sling mounts, and a high-visibility follower. Instructions for installation are also included. A quick-detachable swivel itself is not included—you'll source that separately if you want to use the stud for sling attachment.
No. The threaded design means you simply unscrew your factory magazine cap and thread the extension on in its place. It's a user-level installation that takes a few minutes and no special tools.
Yes. The 8-round capacity and reliable steel construction make it equally useful for home protection, 3-gun competition, tactical training, or any serious shotgun application where extra rounds matter.
