The Guide Quick-release adapter is made for TA & TB Series. Adding this to your thermal clip-on will allow you to quickly detach your clip-on for your scope.
With 3 different sizes, you will find the one that works with your hunting scope:
TYPE A: Works for scopes with an outer objective lens diameter of: 38.1 to 46 millimeters 
TYPE B: Works for scopes with an outer objective lens diameter of: 48 to 54.1 millimeters
TYPE C: Works for scopes with an outer objective lens diameter of: 54.1 to 62.0 millimeters
Make sure that you have checked the diameter of your scope's lens or contact us before buying.