You will need this agm attachment #3 to attach the agm comanche-22 (night vision) or the agm rattler tc (thermal imaging) clip-on scopes to your scope. This mount is for agm item 6606sm31 and is suitable for scopes with an outer diameter between 46.7 and 50 mm (five adapters included). As a rule, these are often rifle scopes with a lens diameter of 40, 42 or 44mm. Choosing the right adapter ring when determining the right adapter ring, you must take into account the dimensions of your riflescope, including the housing on the side of the objective lens. So it's not about the diameter of the objective itself, but basically these scopes often have a 40, 42 or 44mm objective. This #3 mount is only suitable for scopes with the following outer diameters: • 46.7 mm • 48 and 48.7 mm • 49 and 49.5 mm • 50 mm zdoes your scope have a different outer diameter? Then take a look at the other adapter rings in the optional accessories. Not sure what size you should have? Please contact us. How does it work? The agm assembly #3 comes with fünf different adapters. You use the adapter that corresponds to the outer diameter of your scope. You insert this into the mount. Then "öopen" the mount by turning the screw. You slide the montagge üover the gehäuse of your scope and then screw it back on. Finally, screw the agm comanche-22 or agm rattler tc lightly and firmly into the threads of this mount. Application agm clip-on mount #3 (6606sm31) this mount is the essential part to attach an agm clip-on to your scope (e.g. from vortex, konus, swarovski, zeiss, hawke, meopta or leupold). This adapter is designed for use with the agm comanche-22 and agm rattler tc series. With the comanche-22 night vision scope, you can turn your riflescope into a night vision scope. With the agm rattler tc wärmebild clip-on you can turn your riflescope into a wärmebild scope. This assembly is easy to assemble and disassemble.