These Red Dot Sights are ready to mount onto just about any handgun, rifle, or shotgun. The crisp 3 MOA red dot allows for accurate, both-eyes-open shooting on any platform. You can choose from the AT# tactical aro micro red dot sight that uses a Fastfire/Venom Style Mounting Footprint and includes a removable Low Mount for Picatinny or Weaver Rails or select the option that also includes Absolute Co-witness Riser Mount. AT3 Tactical’s ARO Micro Red Dot Reflex Sight with Optional Riser Mount has multi-coated scratch-resistant lens coatings, parallax-free design, and 6 red dot brightness settings for optimal visibility in any lighting conditions from darkness to bright daylight. Includes the CR1632 Battery that will operate up to 5,000 hours at the medium brightness setting. Waterproof and shockproof circuitry gives you peace of mind when it comes to the weather. Specifications for AT3 Tactical ARO Micro 3 MOA Red Dot Reflex Sight with Optional Riser Mount 1x23mm: Manufacturer: AT3 Tactical Color: Matte Black Finish: Anodized Fabric/Material: Aircraft Aluminum Magnification: 1 x Objective Lens Diameter: 23 mm Objective Window Size: 23 mm Reticle: 3 MOA Red Dot Illumination Type: LED Illumination Color: Red Brightness Settings: 6 Eye Relief: Unlimited Adjustment Type: MOA Adjustment Click Value: 1 MOA Emitter Type: Open Optical Coating: Multi-Coated Battery Type: CR1632 Lithium Battery Life: 5000 hours Shockproof: Yes Fogproof: Yes Gun Make: Beretta, Glock, Ruger, Heckler & Koch, FN Herstal, Taurus, Springfield Armory, Canik, Walther Gun Model: Taurus G3, Beretta APX, Glock 23 Gen 5, Glock 34 MOS Gen 5, Glock 40 Gen 4, Walther PDP Compact 5in, Walther PDP Compact 4in, FN 509 Tactical, Glock 19 MOS Gen 5, Heckler & Koch VP9, FN FNX-45, FN 509 Compact, Springfield Armory XD-M, Ruger-57, Walther PDP Full-Size 4in, Walther Q5 Match, Canik TP9SFx, Walther Q4 SF, Canik TP9SF Elite, Taurus G3c, Glock 45 MOS, Glock 17 MOS Gen 5, Glock 22 Gen 5, Glock 41 Gen 4 Length: 1.6 in Height: 1.2 in Weight: 1.8 oz Condition: New Package Type: Clam Pack/ Plastic Attachment/Mount Type: Picatinny Features of AT3 Tactical ARO Micro Red Dot Reflex Sight with Optional Riser Mount This is our smallest red dot sight, with the biggest viewing area with none of the bulk of a standard tube Multi-coated lenses are scratch-resistant and provide excellent image clarity Crisp 3 MOA red dot allows for accurate, both-eyes-open shooting on any platform Parallax-free design: The red dot stays on target, no matter where the shooter’s eye is 6 red dot brightness settings provide optimal visibility in any lighting conditions The ARO uses a Fastfire/Venom Style Mounting Footprint and includes a removable Low Mount for Picatinny Rails We also offer a .83” Absolute Co-witness Cantilever Riser Mount Ready for Duty with your AR15 Mount it on your rifle, shotgun, or pistol the ARO is built to take on just about everything! Waterproof circuitry ensures you’ll stay on target even in adverse conditions Shockproof circuitry resists damage, even when the dot takes a beating from impact or recoil No other Micro Red Dot has an AR-ready riser mount at this price Up to 5,000 Hours of Battery Life at Medium Brightness CR1632 Lithium battery included Package Contents: AT3 Tactical ARO Micro Red Dot Reflex Sight with Optional Riser Mount ARO Red Dot Sight NEW Rubber Lens Cover CR1632 Battery Low Picatinny Mount Instruction sheet Lens cloth Allen wrench for Windage Adjustment Torx Wrench for Mounting Screws Flathead Screwdriver for Battery Cap OPTIONAL: 0.83” Absolute Co-witness Riser Mount Kit