The ATI CZ 8-Shot Fluted Aluminum Mag Extension with Swivel Stud Cap lets you expand your round capacity to 8 shots. The ATI Aluminum Magazine Extension is made to fit CZ 712 12 Ga Shotguns, and lets you store 3 additional shotgun shells. The ATI CZ 712 Mag Extension is made from 6061 T6 aluminum with a Military Type III hard anodized finish, and is made to be easily installed and almost impossible to damage. The magazine extender won't affect your sling, either, since it comes with its own swivel stud.
Fits most CZ 712 12 Ga shotgun; holds size 2 3/4" Shotgun Shells?.