This simple but clever bit of kit is the Bisley Scope Maximiser, it maximises the usability of your scope by obliterating any exterior light that enters the scope from around the eye which affects the image through the scope. The maximiser forces the eye to adjust by dilating the pupil allowing as much light coming through the scope as possible to enter the eye. It is the same principle as looking in a dark room, within seconds of entering the room your eye will adjust increasing the pupil size allowing you to see more. Due to the fact that the maximiser optimises the use of available light this means that it can INCREASE your dawn and dusk shooting by 15min.

The scope maximiser will fit 98% of scopes and suit most shooter including right and left hander's and even those who wear glasses.