Accurate. Dependable. Unbeatable Value in a Small Package. Featuring a crisp 2 MOA red dot reticle, waterproof housing with shockproof internals, and weighing in at only 3.6 ounces, the AT3 RD-50 Red Dot sight is optimized for the AR platform, but also ideal for shotguns, handguns, hunting rifles, and any other weapon with a Picatinny or Weaver rail system. Accurate Crisp 2 MOA red dot allows for accurate, both-eyes-open shooting. Parallax free design: The red dot stays on target with following the movement of the user’s eye. 11 red dot brightness settings provide optimal visibility in any light conditions. Multi-coated, scratch resistant amber lens provides enhanced image clarity. Dependable Fully waterproof, with rubber gaskets on turrets and battery cover. Nitrogen filled 6061 T6 aluminum body resists fogging and moisture. Matte black anodized finish resists scratches while keeping a stealthy profile. Shockproof circuitry resists damage from rough handling. Unbeatable Value Exceptional battery life – up to 50,000 hours at the lowest brightness setting. CR2032 Lithium battery included. Factory-direct pricing – no distributor markup. Backed by the Lifetime AT3 Warranty. We stand behind our products! Inside the box: Red dot sight Rubber bikini cover Instruction sheet Lens cloth Allen wrench Red Dot Sight Technical Specs Power / Obj. Lens: 1x23mm Reticle: 2 MOA Red Dot Lens Coating: Multi-coated Weight: 3.6 oz Mounting Length: 1.1 inch / 28 mm Total Length: 2.4 in / 61.8 mm Exit Pupil: 22mm Battery Type: CR2032 (Battery Included) Battery life: up to 50,000 hours on the lowest setting. Approx. 5,000 hour with typical use Windage/Elevation Click Value: 1 MOA per click Adj Range: +/- 35 MOA (total adjustment range 70 MOA) Eye Relief: Unlimited Parallax Adjustment: Fixed Field of View: Unlimited Night Vision Compatible: No Nitrogen Filled: Yes Waterproof/Fogproof: Yes Recoil resistance – Certified up to 500g’s. Certified for use with large-caliber rifles and shotguns, as well as “springer” airguns with 2-way recoil Body material: 6061 Aluminum Finish: Matte black anodized or Flat Dark Earth Coating Frequently Asked Questions Q: Do I need to use iron sights along with the RD-50 Red Dot Sight?A: NO – Iron sights are not required to use this red dot sight! The red dot sight can be used on its own. Many people choose to use iron sights as a backup, but they are optional. This red dot sight will work great on “optics ready” rifles that don’t have any iron sights.