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MXT Extension Kit +1 12Ga
MXT Extension Kit +2 12Ga
MXT Extension Kit +3 12Ga
MXT Extension Kit +4 12Ga
MXT Extenstion Kit +5 12Ga
MXT Extension Kit +6 12Ga
MXT Extension Kit +7 12Ga
MXT Extension Kit +8 12Ga
MXT Extension Kit +9 12Ga
MXT Extension Kit +1 12Ga
MXT Extension Kit +2 12Ga
MXT Extension Kit +3 12Ga
MXT Extension Kit +4 12Ga
MXT Extenstion Kit +5 12Ga
MXT Extension Kit +6 12Ga
MXT Extension Kit +7 12Ga
MXT Extension Kit +8 12Ga
MXT Extension Kit +9 12Ga
None
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NORDIC COMPONENTS - MXT EXTENSION TUBE KITS 12 GA UNIVERSAL FIT

15 Reviews
Cartridge Capacity
Model Number
Brownells #
100501032, 100501033, 100501034, 100501035
MFR #
MXT-TBS-12-2K, MXT-TBS-12-3K, MXT-TBS-12-4K, MXT-TBS-12-5K
UPC
816696021461, 816696021478, 816696021485, 816696021492
$68.95
Coupon Code
Purchase Limit Help

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International purchase information

What is the NORDIC COMPONENTS - MXT EXTENSION TUBE KITS 12 GA UNIVERSAL FIT?

Nordic Components MXT Extension Tube Kits are a universal fit solution for extending the capacity for a variety of 12ga shotguns. These MXT Extension kits include: the tube in the additional capacity you select, the correct length spring for the tube, and an end cap. Simply select the proper capacity MXT Extension kit you need then purchase the correct Nordic Components Shotgun Extension Tube Nut that fits your shotgun (sold separately).

"B" Models are engineered for flush fit on Benelli M1/M2 (+3B on 18.5" barrel; +5B on 21" barrel)

  • Anodized 6061 aluminum for strength and weight
  • Features relief groove to eliminate barrel clamp travel and ensure repeatable placement after disassembly (+2 through +9 extensions only)
  • Relief groove located off-center to allow location adjustment by reversing the tube
  • Machined with matching thread pitch on both ends to allow reversing the tube

Click this link to find the attachment nut for your firearm application: Extension Tube Nut

Specifications

Please select from the options above to see detailed specifications.

Restriction

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International purchase information

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MXT EXTENSION TUBE KITS 12 GA UNIVERSAL FIT REVIEWS

4.4
15 Reviews
5 Stars
73%
4 Stars
13%
3 Stars
0%
2 Stars
7%
1 Stars
7%
Reviews Summary
The MXT Extension Tube Kits offer high-quality components and easy installation, gaining favor among users. However, some customers note issues with compatibility and proprietary design requiring individual part purchases, which can elevate costs. The overall sentiment is positive, emphasizing improved functionality for various shotguns.
What Reviewers Are Saying
Product Quality
60%
Reviewers consistently praise the high-quality materials and construction of the MXT Extension Tube Kits, with many stating they exceed expectations in terms of durability and performance.
Compatibility Issues
40%
Some users report challenges with fitting the extension kit on various shotgun models, particularly newer or less common generations, indicating a need for more versatile designs.
Proprietary Design
50%
Reviews highlight the proprietary aspect of the product, which necessitates purchasing additional components separately, potentially increasing the overall cost for consumers.
Ease of Installation
55%
Many customers appreciate the straightforward installation process of the extension kits, with clear instructions making it accessible to a wide range of users, enhancing the overall customer experience.
Value for Money
45%
The product is often viewed as a worthwhile investment, with users expressing satisfaction over its performance in comparison to cheaper alternatives, though some are hesitant due to additional costs from proprietary components.
Customer Photos & Videos
5
7 plus 1 ready for the fight
I bought one of these 8 years ago for a home defense 12 gauge Beneili clone pump gun by ATI. At first it bothered me that it stuck out 2” beyond the barrel, but after considering that the gun now held 7 rounds plus one in the chamber allowed me to see it as the tool it was meant to be. It’s not on display over the mantle or showcased in a glass door gun case. It lives in a bedroom corner next to my nightstand - muzzle down, ready in case it’s needed. It’s impression is with its external shell carriers a tool, ready for work!
Would you recommend this? Yes, I would recommend to a friend
by Calvin Wing on July 24, 2025
Was this review helpful? 0
5
Quality extensions
Great extension to turn old auto5 into a comp/defense shotgun. Need a little threadlocker on these since auto5 can't use barrel clamp. Easy setup, great instructions and made in USA.
by JEFFREY PEDERSEN on December 24, 2023
Verified Purchase
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5
Great Product
Fit perfect on a Mossberg 930 Tactical. Excellent Quality product.
by Longranger on July 09, 2021
Was this review helpful? 1
5
Nice fit and finish.
This I'd installed on my EAA Girsan MC312 28" barrel. Because there are no specific Nordic Components nut for the MC312, I researched and found the BR1200 fits but with a modification. You can either, cut the magazine tube 0.4375" or add a 0.4375" spacer.
by Mogfog Guns on December 26, 2020
Was this review helpful? 1
5
Excellent
High quality, perfect for snow geese,and crows or anything else you need lots of shells for.
by Bps shooter on January 20, 2020
Was this review helpful? 0
View All 15 Reviews
Customer Questions
129 Questions