The Advantage Tactical Sight... Lightning Quick Sight Acquisition & Error Free Sight Alignment The ATS maximizes: 1.) Quick target acquisition along with precision accuracy. 2.) Greater target area visibility. 3.) Greater sight visibility in most lighting situations. 4.) Ability to shoot with both eyes open. 5.) Ability to tune sight scheme to the eyes of the individual shooter. 6.) Sight adjustment without compromising sight strength. SIGHT ALIGNMENT: Simply align the front sight blade into the recessed area of the rear sight. The front and rear sights so aligned form a pyramid. Place the top point of the pyramid on the desired point of bullet impact. The brightly colored columns of the rear sight will guide your eyes to the brightly colored front sight for quick and precise sight alignment. The precise, error free sight alignment of the ATS creates for the shooter a shot-by-shot information feedback system. The ATS itself becomes a learning tool for enhancement of shooting skills. After an initial learning curve, many shooters report an improvement in their shooting skills, beyond their former abilities with traditional iron sights. As practice continues, the tendency to see the rear sight peripherally or subconsciously increases. The need for precise sight alignment, especially at close to moderate distances will diminish, as your eyes become more front sight oriented. Longer distanced targets may also be hit more precisely. Five easily interchangeable colored cassettes are included with the purchase of each ATS. Mix and match easily, create the best color combination for you.