Nordic Components +8 MXT Shotgun Magazine Extension Tube Kit – 12 Gauge
Not Yet Rated | Write the First Review SKU: 222-NOR-MXT-TBS-12-8K
UPC: 816696000000

Nordic Components +8 MXT Shotgun Magazine Extension Tube Kit – 12 Gauge

Max Capacity. Match-Ready. Built to Perform.

When firepower matters most, the Nordic Components +8 MXT Shotgun Magazine Extension Kit delivers unmatched capacity and rock-solid reliability. Whether you’re preparing for 3-Gun competition, tactical duty, or simply want to maximize your shotgun’s potential, this kit adds +8 rounds of 2.75" 12-gauge shells to your existing magazine tube—with legendary Nordic precision.

Machined from lightweight 6061-T6 aluminum, the +8 MXT tube features a relief groove to lock barrel clamps in place, maintain alignment during disassembly, and offer repeatable fit with no guesswork. Designed for modular compatibility and serious round count upgrades, this is the go-to solution for building a high-capacity 12GA shotgun.

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

Key Features

• Adds +8 Rounds to Your Shotgun
  Boosts total capacity for serious shooting applications. Ideal for competition, tactical, and defensive setups.

• Lightweight & Durable Aluminum Construction
  CNC-machined from 6061 anodized aluminum—lightweight, corrosion-resistant, and ultra-durable.

• Modular Fit, Precision Engineering
  Machined threads on both ends allow the tube to be reversed for optimal alignment. Relief groove helps lock in clamp placement for consistency.

• Complete Extension Kit
  Includes:

  • +8 extension tube

  • End cap

  • Full-length magazine spring

• Reversible Tube Design
  Off-center relief groove allows for fine-tuned clamp placement simply by flipping the tube orientation.

• Made in the USA
  Built to Nordic’s exacting standards and backed by their industry-respected name.

Installation Requirements

⚠️ IMPORTANT: This kit requires an MXT extension tube nut (sold separately) to mount to your shotgun.

• Shotguns with internal magazine dimples (common in Remington, Mossberg, etc.) must have these removed for proper spring and shell feeding.

• Some factory magazine plugs or retention devices must also be removed.

• Visit Nordic’s MXT Fit Guide to verify length compatibility for your specific shotgun model and barrel length.

Product Specifications

Ideal For:

• 3-Gun competitors needing high shell capacity
• Tactical shotgun setups and patrol shotguns
• DIY builders upgrading from low-capacity tubes
• Users looking for lightweight, high-durability, and precision modularity in their shotgun platform

Why Choose Nordic Components?

Nordic Components is the gold standard in shotgun extensions—trusted by competitive shooters and professionals across the U.S. Their MXT line offers unmatched modularity, reliability, and strength, with components trusted by top performers in the world’s most demanding environments.