Nordic Components MXT +7 Magazine Extension Kit for Shotguns

The Nordic Components MXT +7 Magazine Extension Kit for Shotguns is a straightforward way to add capacity to your 12-gauge shotgun's magazine tube. Built from anodized 6061 aluminum, this extension tube system is engineered to be durable and lightweight—priorities for hunters and sport shooters who need their gun handling to stay responsive even with extra rounds on board. The kit includes the extension tube itself, a properly matched spring, and an end cap, so assembly is a matter of installing it on your shotgun's magazine tube using the correct Nordic Components extension tube nut for your specific firearm (sold separately).

A relief groove machined into the tube eliminates barrel clamp travel, which means the extension sits in the same position every time you disassemble and reassemble—a detail that matters if you rotate between different shooting scenarios or need to service your gun in the field. The groove is positioned off-center, so you can flip the tube to fine-tune fit if needed. Nordic Components engineered the MXT line to work on a wide range of 12-gauge shotguns, making this a practical upgrade for hunters running autoloaders or pumps who want to stretch their payload without swapping receivers or barrels.

The +7 capacity option strikes a balance: it's substantial enough to make a real difference during a hunt or course of fire, but measured enough to keep sight radius and gun balance in the practical zone. If you're running a Benelli M1 or M2, Nordic also offers purpose-built "B" models engineered for flush fit on those platforms—check compatibility with your specific barrel length before ordering.

Key Features

• Extends magazine capacity by 7 rounds on compatible 12-gauge shotguns
• Anodized 6061 aluminum construction for strength and reduced weight
• Relief groove prevents barrel clamp movement and ensures consistent placement after disassembly
• Reversible tube design allows fine-tuning of fit by flipping the extension
• Includes tube, matched spring, and end cap—requires compatible extension tube nut (sold separately)

Specifications

Frequently Asked Questions

Will this extension work on my shotgun?

The MXT +7 is designed as a universal fit solution for a variety of 12-gauge shotguns. However, you'll need the correct Nordic Components extension tube nut for your specific firearm model to complete the installation—that nut is sold separately. If you own a Benelli M1 or M2, Nordic offers dedicated "B" models engineered for flush fit on those guns.

What comes in the kit?

The kit includes the extension tube itself, a spring matched to the +7 capacity, and an end cap. You'll need to source the extension tube nut separately based on your shotgun's make and model.

Can I adjust the fit of the extension?

Yes. The relief groove is positioned off-center, so you can reverse the tube to allow for positional adjustment if needed. This gives you some flexibility in dial-in the extension for your particular shotgun.

What material is the extension made from?

The MXT +7 is machined from anodized 6061 aluminum, which provides strength while keeping weight down—a practical choice for shotguns that see regular use in the field or at the range.