Carlson’s Browning Invector DS Choke Tube 12 GA

12 Gauge-Extended choke-Constriction: Long Range-Diameter: .715-Fits Browning Invect DS-Triple Shot Technology of three graduated rings in the parallel section of the choke,that allow a more gradual transition from the shotgun bore to the final constriction.-Reduced pellet deformation-Shortened shot string-Less flyers-Ported for reduced muzzle jump & recoil