The Nordic Components Mossberg 12GA Shotgun Barrel Nut (NUT-MB-12-00) allows for the installation of an MXT extension tube kit and replaces the factory magazine cap.

Compatible 12GA Shotguns:

• Mossberg 590/590A1
• Mossberg 835
• Mossberg 930
• Mossberg 935
• Tristar TEC-12 (requires a spacer between barrel lug and nut)

Not compatible with the Mossberg 500 or 535, or the Maverick 88.

Note: Magazine dimples or spring retaining devices, if present, need to be smoothed or removed to allow proper function.