Stoeger M3500, M3000, CZ 712, CZ 612 and Beretta 1301 Comp +3 shot extension
Fits Stoeger M3500, M3000, CZ 712, CZ 612 and Beretta 1301 Comp shotguns. Increase your fire power by +3 shells with our shotgun magazine extension kits. Round count is figured using 2 3/4 inch shells. These kits are constructed of solid matt blued steel and come with spring, base clamp & follower.