US Optics DRS 2.0 ENHANCED DRS20: When looking for a reflex sighting solution for your duty pistol, shotgun or AR, you're looking to achieve one goal - to always be ready. The DRS 2.0 Enhanced will undoubtedly help you find your target fast and take the shot accurately. Its 5 MOA, daylight bright, ambient light sensing red dot is the perfect dot for precise impacts. It features a multicoated lens, wide field of view, aircraft-grade aluminum housing, and edge-to-edge clarity that makes it the perfect choice for any application. Readily accessible 1 MOA elevation and windage dials, side load battery compartment, and common footprint allows for a quick and simple sight-in and zeroing process.