NCStar 4 Reticle Blue Dot Sight Dot Sight differs from our other reflex sight offering from NCStar by featuring the option to use a blue reticle instead of just red or green. This is an exciting change as some of our customers have wanted a blue reflex sight. The selectable reticles are a bullseye, starburst, dot, and cross. Each of these options are very easy to see on all available brightness levels. The QD (quick detach) style allows easy access on and off your rail mount.