Carlson's Choke Tubes Shotgun Magazine Extension Assembly 12 Gauge TriStar Viper 8-Round Black 8RD

Carlson's Choke Tubes Shotgun Magazine Extension Assembly 12 Gauge TriStar Viper 8-Round Black 8RD. These magazine extensions are constructed of solid steel and come with spring base clamp with swivel stud (included) to work with quick detachable swivel (not included) and a high visibility follower (some extensions require factory follower and will not come with one). The threaded tube replaces you magazine cap and gives you the ability to add extra rounds to you magazine. The magazine extension