Nordic Components115662098
Nordic Components 12 Gauge +6 MXT Extension Tube - Shotgun Magazine Extension$64.79
Availability: In Stock
The Nordic Components MXT Modular 12 Gauge Magazine Tube Extension Assembly is a drop-in capacity upgrade for 12-gauge shotguns. Built from 6061 aluminum, this matte-finish extension tube lets you add 2 to 9 extra rounds depending on which capacity kit you choose—perfect for hunters, sport shooters, and competition shotgunners who want more shells on tap without a complete mag system overhaul. The MXT system ships with the tube, matched-length spring, and end cap; you'll just need to source the correct extension tube nut for your specific shotgun model (sold separately).
What sets the MXT apart is its engineering for real-world use. A relief groove machined into the tube (on +2 through +9 extensions) eliminates barrel clamp creep, so the extension stays put after you break down your gun for cleaning. That groove is intentionally off-center, too—flip the tube and you can adjust fit to account for minor variations in mounting. If you're running a Benelli M1 or M2, Nordic offers dedicated "B" models engineered for flush fit: +3 capacity on 18.5" barrels, +5 on 21" barrels.
The matte anodized finish resists glare and blends with tactical and field setups alike. Assembly is straightforward: tube, spring, cap, and nut—no gunsmithing required. Just verify you have the right nut for your shotgun before ordering.
| Brand | Nordic Components |
| Product Type | Magazine Tube Extension Assembly |
| Caliber/Gauge | 12 Gauge |
| Material | 6061 Aluminum |
| Finish | Matte Anodized |
| Capacity Increase | +2 to +9 rounds (varies by kit) |
| What's Included | Extension tube, spring, end cap |
| What's Needed Separately | Extension tube nut (shotgun-specific) |
Yes. The MXT extension kit includes the tube, spring, and end cap, but you'll need to purchase the correct extension tube nut separately—it's shotgun-specific, so verify compatibility with your model before ordering.
Nordic Components makes dedicated "B" models for Benelli M1 and M2 shotguns, engineered for flush fit. The +3B is designed for 18.5" barrels, and the +5B for 21" barrels. Standard MXT extensions are available for other 12-gauge shotguns; confirm your gun model matches the extension nut you select.
The MXT system comes in several capacity kits, ranging from +2 to +9 rounds. Verify your shotgun's compatibility and any legal restrictions in your area before ordering a specific capacity.
The relief groove is positioned off-center, so you can reverse the tube to adjust fit and account for minor mounting variations. This reversible design helps ensure consistent placement after disassembly and cleaning.
SKU: 115784369 • Width: 6.25in • Height: 1in • Depth: 14in • Weight: 0.31oz
Availability: In Stock
The Nordic Components MXT Modular 12 Gauge Magazine Tube Extension Assembly is a drop-in capacity upgrade for 12-gauge shotguns. Built from 6061 aluminum, this matte-finish extension tube lets you add 2 to 9 extra rounds depending on which capacity kit you choose—perfect for hunters, sport shooters, and competition shotgunners who want more shells on tap without a complete mag system overhaul. The MXT system ships with the tube, matched-length spring, and end cap; you'll just need to source the correct extension tube nut for your specific shotgun model (sold separately).
What sets the MXT apart is its engineering for real-world use. A relief groove machined into the tube (on +2 through +9 extensions) eliminates barrel clamp creep, so the extension stays put after you break down your gun for cleaning. That groove is intentionally off-center, too—flip the tube and you can adjust fit to account for minor variations in mounting. If you're running a Benelli M1 or M2, Nordic offers dedicated "B" models engineered for flush fit: +3 capacity on 18.5" barrels, +5 on 21" barrels.
The matte anodized finish resists glare and blends with tactical and field setups alike. Assembly is straightforward: tube, spring, cap, and nut—no gunsmithing required. Just verify you have the right nut for your shotgun before ordering.
| Brand | Nordic Components |
| Product Type | Magazine Tube Extension Assembly |
| Caliber/Gauge | 12 Gauge |
| Material | 6061 Aluminum |
| Finish | Matte Anodized |
| Capacity Increase | +2 to +9 rounds (varies by kit) |
| What's Included | Extension tube, spring, end cap |
| What's Needed Separately | Extension tube nut (shotgun-specific) |
Yes. The MXT extension kit includes the tube, spring, and end cap, but you'll need to purchase the correct extension tube nut separately—it's shotgun-specific, so verify compatibility with your model before ordering.
Nordic Components makes dedicated "B" models for Benelli M1 and M2 shotguns, engineered for flush fit. The +3B is designed for 18.5" barrels, and the +5B for 21" barrels. Standard MXT extensions are available for other 12-gauge shotguns; confirm your gun model matches the extension nut you select.
The MXT system comes in several capacity kits, ranging from +2 to +9 rounds. Verify your shotgun's compatibility and any legal restrictions in your area before ordering a specific capacity.
The relief groove is positioned off-center, so you can reverse the tube to adjust fit and account for minor mounting variations. This reversible design helps ensure consistent placement after disassembly and cleaning.
SKU: 115784369 • Width: 6.25in • Height: 1in • Depth: 14in • Weight: 0.31oz