Carlson's Choke Tubes +7 Extended Magazine Tube Kit 12 Gauge Mossberg 930

Add some extra firepower to your home defense shotgun with the Carlson's Choke TubesA(R) +7 Extended Magazine Tube Kit for 12GA MossbergA(R) 930 Shotguns. This shotgun magazine extension features solid blued steel construction and includes a spring, base clamp with swivel stud (included), and a high visibility follower. The threaded tube is designed to replace your magazine cap and allows you to add extra rounds to your magazine. This tube kit is an aftermarket shotgun magazine extension tube kit designed to bring total capacity of 7 rounds to your compatible Remington shotgun. Backed by a lifetime warranty. Made in USA.**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.