Holosun Micro Red Dot Sight

From the Amazon Listing

• Green 6 MOA Dot Sight: The 6 MOA green dot is optimized for close-range tactical applications, allowing rapid dot acquisition on the draw and faster follow-up shots. The green reticle offers enhanced visibility in bright environments, ensuring a clear and confident sight picture when it matters most
• Parallax-Free Optics & Exceptional Clarity: The aspherical, multi-layer coated lens delivers a distortion-free, parallax-free sight picture through a large viewing window for fast and precise target acquisition. Advanced multi-layer coatings reduce glare and enhance optical clarity, while a hydrophobic lens coating repels water and dirt—keeping the lens clean so you can stay focused on the shot
• Ready to Mount: Fits RMSc-cut slides out of the box and includes nine sets of anti-recoil mounting screws for secure and reliable installation across a wide range of firearms. To expand compatibility, MOS-to-RMSc and RMR-to-RMSc adapter plates are included, allowing the optic to fit even more handgun platforms
• Enclosed Emitter Design: Fully sealed, IP67-rated construction protects the emitter from impact, dust, and moisture, ensuring reliable performance in any condition
• Long-Life, Side-Loading Battery: The precision-engineered optical system minimizes power consumption, and paired with a high-capacity CR1632 battery, delivers up to 50,000 hours of runtime (mode 3) for long-lasting, reliable performance. The side-load battery design allows effortless replacement without removing the optic, maintaining zero on your firearm. An integrated battery-cap screw prevents loss during maintenance, ensuring secure and convenient operation.