The S&J Hardware Mossberg 590 +2 Magazine Extension is extensively field tested and meet or exceed law enforcement and military requirements.
The S&J Hardware Mossberg 590 Magazine Extension is an extremely durable, high quality, solid steel Mossberg Magazine Extension that comes with everything you need to upgrade your shotgun to the next level.
The S&J Hardware Mossberg 590A1 +2 Magazine Extension is CNC milled from pure steel, Just like your gun. Don't settle for aluminum.
Removable 3 Position Front Sling Plate
Super Duty Magazine Spring.
No Jam Mag Follower.
Fits Mossberg 590, 590A1, 835, 935 Series 12 Gauge Shotguns