The Nordic Components MXT +8 12GA Magazine Tube Kit (brand part no. MXT-TBS-12-8K) adds eight rounds to your existing 12-gauge magazine capacity. It is used in conjunction with a Nordic Components 12-gauge extension tube nut, which is sold separately and required for installation. The tube ships in a black finish and is part of Nordic’s MXT magazine extension lineup, built specifically to work with Nordic’s own nut and clamp hardware rather than as a universal fit. For a shotgun already fitted with the matching nut, this kit delivers a substantial round-count increase for a fighting or competition shotgun.

Key Specifications

• Chambered for 12 gauge shotguns.
• Adds 8 rounds to existing magazine capacity.
• Part of Nordic’s MXT magazine extension lineup.
• Requires a separately sold 12-gauge extension tube nut to install.
• Finished in black.

Frequently Asked Questions

How much capacity does this kit add? Eight rounds beyond your existing magazine capacity.

Do I need anything else to install it? Yes, a Nordic Components 12-gauge extension tube nut, sold separately.

Buy the Nordic Components MXT +8 12GA Magazine Tube Kit (Nut Required)

Order the Nordic Components MXT +8 Kit from our Lubbock, Texas gun shop and add real capacity to your 12-gauge. It is a direct-fit tube among our shotgun magazines. Add it to your cart for fast, insured shipping direct to your door.