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 BN-model nut is compatible with the following 12 gauge shotguns:
Magazine dimples or spring retaining devices, if present, need to be smoothed or removed to allow proper function.
Note: This nut is 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.