Beretta Choke Tube Optimachoke HP Ported Edition 12 GA Black Improved Cylinder. Manufactured from high strength steel 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 (barrels should be marked OB-HP). These choke tubes are designed for 12 gauge shotguns with the optimachoke HP system. Specifications for Beretta Choke Tube Optimachoke HP Ported Edition 12 GA: Manufacturer: Beretta Color: Black Finish: Blued Fabric/Material: Stainless Steel Gauge: 12 Choke Tube System: Beretta Optima HP Gun Make: Beretta Gun Model: Universal Package Contents: Beretta Choke Tube Optimachoke HP Ported Edition 12 GA The Beretta Optimachoke Hp Ported 12ga. Modified Extended .75" is a quality addition to the Beretta lineup. For more great deals on Choke Tubes by Beretta please browse our Beretta Weapon Accessories page. Beretta C6A469: Choke Tube Optimachoke HP Ported Edition 12 GA Black Improved Cylinder