These factory Extended Beretta Optima HP chokes suit the below models
 
Beretta 692-694-DT11
New Model 686 Silver Pigeon
New Model A400 series
 
Full Choke - Not suitable for Steel shot
Improved Modified - Not suitable for steel Shot
Modified - Suitable for Steel shot
Improved Cylinder - Suitable for steel shot
Skeet - Suitable for steel shot
 
If you are unsure if these will fit please let us know and we will check for you.