With all the performance of the original Trijicon ACOG (Advanced Combat Optical Gunsight) wrapped in a smaller 5.1 oz package, the 1.5x16S model is perfect for fast-moving tactical teams and speed-oriented competitions. This highly compact riflescope provides platforms like M16/M4 with excellent fire control capability and lightning fast target acquisition. Using Trijicon's Bindon Aiming Concept (BAC) feature, users can keep both eyes open while engaging targets and maintaining maximum situational awareness.