*4 x Red/Green Reticles: Reticle allows for 4 different styles(Dot, Circle/Dot*Tubeless design with 33mm reflex lens aperture provides a wide field of view,*Allen head screw type windage and elevation click adjustments, with locking screwSighting system allows for fast target acquisition, and the open design allows the shooter to stay aware of the surroundings. The dot system is adjustable for red or green and any one of four different styles of reticle. Like getting 4 different sights in one! Lightweight, yet tough and with the rail attachment system it securely mounts to your rifle or shotgun and will last.