Samuel Colt reportedly once stated that a firearm is a device for carrying the will over a distance. This thought clearly indicates the transparency of the tool itself. As a shooter you must focus on the target, its movement, and not on the trigger, safety, bolt operation, image magnification, aligning the front sight and rear sight etc. All activities related to aiming, swinging, pulling the trigger, and reloading must happen almost without your attention. That said – if the rig is not set up correctly it might work against you.