Beretta Optima HP (A-400) Super Steel Choke tubes have been BEEFED up with Carpenter 455 stainless steel, adding more strength to this choke to withstand steel shot and other heavy tungsten shot shells ammunition.

Due to the thin wall design of the Optima HP choke system, a tougher material than the 17-4 stainless steel used in Carlson's other tubes, was required.  By using the new Carpenter 455 material this choke can now be used with Steel, Hevi Shot, and other tungsten shot shells without worrying about the choke tube swelling and sticking in the shotgun’s barrel.

These choke tubes work with all lead shot shells, also.

They extend ¾” outside the barrel eliminating barrel damage caused from prolonged use of steel shot. The longer parallel section allows for use of larger steel shot in tighter choke constrictions. These choke tubes have a knurled extension and a matte blue finish. All steel shot can be used in the Close Range and Mid Range choke tubes, DO NOT use steel faster than 1550 FPS or steel shot sizes larger than BB through the Long Range choke tube.