The unique design of the GG&G four shell sidesaddle provides quick access to your ammunition at an angle that matches your hand. The ingenious design facilitates loading the mag tube and the chamber. Compatible with the short tactical length forearms only, longer length sporting forearms will need to be replaced prior to installation. No modifications are required to the weapon for installation. Mounts solidly to the receiver using provided steel trigger pin replacement bolts, and the non-marring backing plate will not damage the receivers finish.
Features and Specifications:
Manufacturer Number: GGG-1512
Weight: 3.4 ounces
Overall length: 4.5”

Fits:
Mossberg 500/590