A +2 magazine extension for Mossberg 590 and 590 A1 shotguns with 5-shot magazine tubes. CNC milled from solid steel with a black nitride finish — built to the same standard as the S&J Hardware lineup across the board.
What's Included
+2 round magazine extension
S&J Hardware NoJam follower
Magazine spring
3-position sling plate
Features
For 5-shot tube models (6-shot total capacity)
CNC milled from solid steel
Black nitride finish for superior rust protection and increased surface hardness
No gunsmithing required
Compatibility
Fits Mossberg 590 and 590 A1 shotguns with 5-shot magazine tube. 12 gauge only.
