Allowing for precision aiming and targeting, the RAP4 holographic blade scope is a small and accurate targeting system.  With options for 4 different styles of crosshairs including; dot, circle and dot, circle and crosshairs, or a plus (+) the blade scope is perfect for any environment.  With two choices for sight color the scope is perfect for any environment projecting either a red or a green target.  An offset hopper or an elbow is recommended so you can easily aim down the sights with no obstructions.