Carlson's Choke Tubes +9 Extended Magazine Tube Kit for 12GA Benelli Nova, SuperNova, Beretta Extrema, 1301, CZ 712, 912 Shotguns

Compatible with most 2.75" shells, the Carlson's Choke Tubes +9 Extended Magazine Tube Kit for 12GA Benelli Nova, SuperNova, Beretta Extrema, 1301, CZ 712, 912 Shotguns is a drop-in mag tube kit featuring durable steel construction with a corrosion-resistant blued finish. The high-strength 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. If that's not enough, the threaded tube extension installs directly to your shotgun's factory-length magazine tube for quick installation and reliable performance right out of the box. +9 capacity.

Note: When using 3" shells, you lose 1 shell capacity. When using 3.5" shells, you lose 2 shell capacity.