Beretta optimachoke hp 12ga.Im extended 2 FEATURES: -Caliber:12 gauge -Constriction: improved modified -Extended +2 -Manufactured from high strength steel -Finished in a nickel-alloy coating -Fits Beretta A400 Xtreme, A400 Xplor, A400 Xcel, 690, 692, DT11, A300 Xtrema, SV10 -Fully interchangeable on all Beretta barrels that are threaded for Optima-Choke® HP