The DoubleThreat Dual Position Dove Choke quickly adjust for long-range passing shots or close-range decoy shots. A simple "twist and click" design allows for a quick change between "Pass" and "Decoy" constrictions. For use with dove and field loads (#6-#8). Includes spanner wrench. This choke is compatible with the following shotgun models: Benelli/Beretta Mobilchoke; Franchi; Stoeger pumps/semi-automatics; Mossberg Pro-Factor PF2 Silver Reserve.