Beretta Optima-Choke HP tubes stand up to the heat of competition. Manufactured from high strength steel and finished in a nickel-alloy coating and a colored aluminum band, these chokes guarantee significant corrosion resistance and have the ability to withstand the rigors of steel shot (No steel shot tighter than MOD). Optima-Choke HP tubes are fully interchangeable on all Beretta barrels threaded for Optima-Choke HP.Beretta Optima-Choke HP tubes stand up to the heat of competition. Manufactured from high strength steel and finished in a nickel-alloy coating, these chokes guarantee significant corrosion resistance and have the ability to withstand the rigors of steel shot. Optima-Choke HP tubes are fully interchangeable on all Beretta barrels that are threaded for Optima-Choke HP. Features: Aluminum band