The ZeroTech Thrive HD Micro Reflex THDM21G Green Dot Sight is designed for shooters who want a reliable, lightweight optic for their compact, optic-ready handguns. Featuring a precise 3 MOA green dot, this sight uses the trusted Shield RMSc footprint, ensuring compatibility with a wide array of pistols that support this standard. At just 19 grams, the Thrive HD adds minimal weight while providing robust, recoil-proof, waterproof, and fog-proof performance. Shake awake technology and ten brightness settings allow for fast readiness and clear aiming in varied lighting conditions, while multi-layer lens coatings provide a crisp sight picture. Uses Shield RMSc footprint for confirmed direct mounting 3 MOA green dot with shake awake technology Adjustable brightness and lightweight design With its compact size, rugged construction, and advanced features, the ZeroTech Thrive HD Micro Reflex Green Dot Sight is an excellent option for daily carry, range use, or competition. Its proven footprint and modern performance highlight its value as a high-quality micro optic for todays shooters.