Lancer’s carbon fiber LSX extended 12-gauge shotgun magazine tubes are the ultimate increased-capacity solution for hunting, competition, and home defense, available for Benelli, Beretta, Mossberg, Remington, and Stoeger models. Designed to install in place of the factory magazine tube cap, these smooth-feeding extension tubes add capacity while adding considerably less swing weight than traditional aluminum extension tubes. They include an extra-long spring that can be cut to the desired length during installation; extension tube clamps are available separately for tubes that extend beyond the end of the barrel.