Nordic Components +5 MXT Shotgun Magazine Extension Tube Kit – 12 Gauge
Not Yet Rated | Write the First Review SKU: 222-NOR-MXT-TBS-12-5
UPC: 816696000000

Nordic Components +5 MXT Shotgun Magazine Extension Tube Kit – 12 Gauge

Built for Capacity. Designed for Speed. Trusted in Competition.

Take your shotgun’s performance to the next level with the Nordic Components +5 MXT Magazine Extension Tube Kit (12ga)—an elite upgrade for shooters demanding higher round counts without compromising reliability or balance. Whether you’re stepping into 3-Gun, building a tactical defense setup, or preparing for an extended hunt, this +5 extension adds five extra rounds of 2.75" 12-gauge firepower to your existing magazine.

Machined from lightweight yet rugged 6061 aluminum and anodized for durability, the +5 MXT tube installs easily (with a required MXT extension nut) and offers a repeatable fit with every disassembly, thanks to its smart relief groove and precision threading.

⚠️ Requires Nordic MXT Extension Nut (sold separately) to attach to your shotgun’s magazine tube.

Key Features

• +5 Capacity Increase
  Expands your shotgun’s magazine by five rounds of 2.75" shells. Add serious staying power for competition, defense, or field use.

• Lightweight, Durable Construction
  Made from anodized 6061-T6 aluminum—strong enough for hard use, light enough to keep your shotgun balanced.

• MXT Modular System
  Compatible with all Nordic Components MXT extension nuts (sold separately). Threads on both ends allow the tube to be reversed for optimal fit and alignment.

• Anti-Slip Relief Groove
  Prevents clamp migration under recoil and ensures consistent, repeatable placement—even after repeated disassembly.

• Full-Length Spring & Tube Cap Included
  Comes ready for install with a precision-wound spring and durable end cap. (+1 models feature an integrated cap design.)

• Universal Fitment
  Works with many 12-gauge shotguns, including Remington, Mossberg, Benelli, Winchester, Beretta, and others with compatible mag tube threading.

Installation Notes

⚠️ MXT Extension Nut Required – This kit will not install without a matching MXT nut for your shotgun model.
⚠️ Receiver Mods May Be Necessary – Most shotguns (especially Remington) with factory magazine dimples will require internal smoothing or dimple removal. Spring retainers/followers must be removed for proper function.

Product Specifications

Perfect For:

• 3-Gun and IPSC/USPSA shotgun competition

• Tactical defense and patrol shotguns

• Waterfowl and predator hunters needing extra capacity

• Remington 870/1100/Versa Max, Mossberg 930, Benelli M2/M4 builds

• Shooters looking for lightweight, modular upgrades

Why Choose Nordic Components?

Because they build extensions that win matches. Trusted by competitive shooters and tactical operators, Nordic’s MXT line is the gold standard in modular shotgun magazine extensions. With tool-free takedown, extreme durability, and precision machining, these systems are ready for any stage, any range, any mission.