This Red and Blue dot Reflex optic with integrated green laser is two sighting devices in a compact and sleek design. 1.7" dot height is set for 1/3 co-witnesses with AR-15/M4 iron sights. No need for a 3/4" riser, this will attach directly to your AR-15 receiver rail and is ready to go. Unlimited eye relief for flexible mounting. The Red and Blue dot LED (light Emitting Diode) 100% safe for the eyes. 3 MOA Red and Blue dot has five brightness settings and is fully adjustable for windage and elevation. Integrated green laser is fully adjustable for elevation and windage, independent from the Red and Blue dot. Red and Blue dot reticle and green laser is controlled by an electronic control panel with push button controls. The electronic control panel turns on/off, adjusts the brightness levels, and changes the dot reticle from Red and Blue colors. The electronic control panel also turns on/off the green laser. The optic uses a CR123A 3 volt lithium battery for a long battery life. Built in auto locking quick release Picatinny mount that is compatible with Weaver, Picatinny, MIL-STD 1913 rails. Black anodized aluminum body. Bikini style lens covers, mounting, and zeroing tools included. Color: black. Magnification: 1x. Dot size: 3 MOA. Dot colors: Red and Blue. Objective diameter: 25mm. Weight: 6.4 oz. Length: 2.7". lens coating: Platinum. Green laser frequency: 532Nm. Class: I a laser. Maximum output: <5mW- battery: CR123A.