As a leading manufacturer of advance Night Vision and Day-Time Optics ATN is well know for its innovation and pioneering of new ideas and concepts. One of the new 2006 items ATN introduced is ATN Ring Adapter which allows you to place additional accessories such as open collimating sights and laser devices on top of the rifle scope. This will allow you to hit targets on long distance using rifle scope and be extremely accurate on short distance using new innovations such as ATN UltraSightDigitalCompact. Before ATN introduced this new concept your weapon was limited to either long or short range shooting only. Now. however. by simply placing ATN Ring Adapter and ATN UltraSightDigitalCompact on your rifle scope it is all history. No matter on the distance. target is at 600 m away or it is moving extremely fast at 25 m away. you are always in control. One of the new 2006 items ATN introduced is ATN Ring Adapter which allows you to place additional accessories such as open collimating sights and laser devices on top of the rifle scope. ATN Ring Adapter will work on all standard rifle scopes with 30 mm or 1” diameter tube. ATN Ring Adapter with ATN UltraSightDigitalCompact takes shooting experience to completely new horizons.