Description
The MB-model nut is compatible with the following 12 gauge shotguns:
- Mossberg 590/590A1
- Mossberg 835
- Mossberg 930
- Mossberg 935
- Tristar TEC-12 (requires spacer between barrel lug and nut)
This nut is not compatible with the Mossberg 500 or 535, or the Maverick 88.
Any magazine dimples or spring retaining devices will need to be smoothed or removed to allow proper function.