Beretta Optima 12GA Choke HP Extended Chokes. The new Optima-choke HP Extended 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. Optima-Choke HP Tubes are fully interchangeable on all Beretta barrels that are threaded for Optima Choke HP. The end of the choke is identified by a colored alloy stripe for fast and easy indication of the constriction. These choke tubes will only fit 12 gauge shotguns with the Optimachoke HP system. Please note that Optima HP and Optima tubes are not interchangeable!Specifications:Choke Tube Series: Optimachoke HPChoke Tube Type: ExtendedFinish / Color: YellowFirearm Type: ShotgunGauge: 12 GaugeMaterial: Steel