Carlson's Choke Tubes CZ 612 +7 Extended Magazine Tube Kit 12 Gauge 8-Round

Designed to maximize your firepower potential with an additional 7 rounds of ammo, the Carlson's Choke Tubes +7 Extended Magazine Tube Kit for 12GA CZ 612 Shotguns is a must-have mag tube upgrade for the tactical or competitive shotgunner. Featuring solid blued steel construction, the threaded tube extension installs directly to your shotgun's factory-length magazine tube for quick installation, superior strength, long-lasting service, and reliable performance under stress. The steel base clamp clips to the magazine extension tube and the barrel of your shotgun for increased strength and stability and features a built-in sling swivel stud that serves as the forward mount for any 2-point sling. The included high-visibility polymer follower and steel spring work together to ensure smooth and dependable operation. Compatible with 2.75" shells.**Magazine round count is for the total capacity using 2 3/4-inch shells including 1 in the chamber**Note: When using 3" shells, you lose 1 shell capacity. When using 3.5" shells, you lose 2 shell capacity.