Carlson's Cremator Beretta Optima HP 12 Gauge Extended Ported Choke Tube Long Range Stainless Steel Black FIXED QUIVERS TST is a series of

TST is a series of three graduated rings in the parallel section of the choke

yet with a rigid frame

Traditional cold weather design

Inertia Driven Semi-Automatic Action

Carlson's Cremator Beretta Optima HP 12 Gauge Extended Ported Choke Tube Long Range Stainless Steel Black FIXED QUIVERS TST is a series ofCarlson's Cremator choke tubes maximize the performance of today's premium shotgun ammunition. They feature Triple Shot Technology, allowing a more gradual transition from the shotgun bore to maximum constriction. The lessens pellet deformation and creates a shortened shot string with few flyers. The tubes are constructed from 17 4 stainless steel, and are ported to reduce muzzle jump and recoil. They install without a wrench and are easy to remove.