S&J Hardware Mossberg 590 Mag Tube Extension
The ol’ extendy boy. The easiest way to get every last round out of your 590. Includes mount, spring and follower.
- Fits: Mossberg 930 12ga
- Black nitride finish
- CNC machined from solid steel.
- +2 is 4.75inch and is designed for pre-2017 590/590a1 or 835







