The Trijicon Sealed Reflex Sight (SRS) represents the highest level of performance from a sealed reflex-style sight. Because of its innovative design, the SRS takes up less rail space while maintaining the durability expected from Trijicon. The shorter housing eliminates the tube-effect typical of other sealed reflex sights. Featuring a large 28mm aperture, the Trijicon SRS provides a massive field of view for quicker target engagements.