The Aimpoint COA is an ultra-compact, enclosed red dot reflex sight developed specifically for use on pistols equipped with the A-CUT mounting interface. This standalone 1x optic uses a 3.5 MOA red LED aiming dot that balances quick visual acquisition with the precision needed for practical handgun shooting. Its enclosed-emitter construction protects the optical system while maintaining a slim profile suited to concealed-carry, duty and range pistols. The integrated A-CUT interface mechanically secures the optic low in a compatible slide and supports co-witness use when paired with an appropriately configured handgun. Because this model uses the dedicated A-CUT system, the pistol slide must be manufactured or professionally machined for that interface; it is not a direct replacement for optics using other mounting footprints. Tactile push-button controls provide four night-vision-compatible settings and eight daylight settings, allowing the dot intensity to be adjusted for changing light conditions. A side-accessible CR2032 battery powers the sight for up to 50,000 hours at daylight setting 7 under the manufacturer's stated test conditions, and the battery can be replaced without removing the optic from the pistol. The sight measures 45 x 28 x 30 mm and has a 15 x 15 mm clear aperture, offering an unobstructed sight picture in a housing that weighs just 48 grams. Its high-strength aluminum body has a durable semi-matte anodized gray-black finish, and the optic is rated for submersion to 25 meters. Windage and elevation adjustments provide audible and tactile clicks for controlled zeroing. The package includes the Aimpoint COA sight, one CR2032 lithium battery and an adjustment tool, providing the essential components needed to install and set up the optic on a compatible A-CUT-equipped pistol.Specifications and Features: 3.5 MOA red LED aiming dot 1x magnification with unlimited eye relief Integrated A-CUT interface for compatible pistol slides Enclosed-emitter reflex sight design 4 night-vision and 8 daylight intensity settings 50,000-hour battery life at daylight setting 7 45 x 28 x 30 mm body with 15 x 15 mm clear aperture High-strength aluminum housing with semi-matte anodized finish Submersible to 25 meters Includes CR2032 battery and adjustment tool Brand: Aimpoint Series: COA Product Type: Enclosed Red Dot Reflex Sight Manufacturer Part Number: PA000489 UPC: 7350004388257