12 Gauge Benelli Nova/Supernova, Beretta and CZ Extension Nut


This product adapts the MXT extension tube kit to your shotgun.

Visit this page for information to ensure you order a complete kit assembly.

SKU: NUT-BR-12-00 Categories: ,


The MXT extension nut allows for installation of a Nordic Components MXT 12ga shotgun extension tube kit. The nut replaces the factory magazine cap, and is required for installation of the extension tube kit.

The BR-model nut is compatible with the following 12 gauge shotguns:

  • Benelli Nova and Supernova
  • Beretta 1301 Competition and Tactical
  • Beretta 391 Xtrema and Xtrema II
  • Beretta A400 Xtreme and Xtreme Plus
  • CZ 612, 712, and 912
  • Weatherby SA-08
  • Fabarm STF 12 – Will fit but a small gap will be left internally between the two magazine tubes.

Any magazine dimples or spring retaining devices will need to be smoothed or removed to allow proper function.

Note: This nut will also be compatible with other shotguns utilizing the same factory magazine thread pattern, but may require modification/fabrication for proper installation. Nordic Components does not have specific information regarding compatibility beyond the models listed in this description.

Additional information

Weight 0.11 lbs
Dimensions 9 × 5 × 2 in


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