"The Holosun HE507K‑GR X2 is a compact and versatile red dot sight designed for handguns and concealed carry. With its rugged construction, advanced multi-reticle system, and long-lasting battery life, it delivers fast, intuitive aiming and reliable performance for both everyday shooters and tactical enthusiasts."   Lightweight and Durable Design – Weighing only 1 oz, the Holosun HE507K‑GR X2 features a CNC-machined 7075 T6 aluminum body and IP67-rated dust and water resistance, making it robust enough for everyday carry and extreme conditions.  Versatile Multi-Reticle System – Switch easily between a 2 MOA dot, 32 MOA circle, or the dot+circle combination to adapt to various shooting scenarios, from rapid target acquisition to precise aiming. Long Battery Life with Shake Awake Technology – Powered by a side-access CR1632 battery, it provides up to 50,000 hours of runtime on moderate brightness settings. The Shake Awake feature automatically powers the sight on when moved, ensuring it’s ready the moment you need it. Clear Sight Picture and Unlimited Eye Relief – Multi-coated lens offers bright, crisp visuals, while the open reflex design ensures unlimited eye relief and parallax-free aiming for fast and natural target acquisition. Intuitive Targeting for Enhanced Shooting Performance – The dot+circle design provides an immediate, easy-to-use aiming reference. Shooters experience faster target acquisition and improved shot grouping, making it ideal for both beginners and advanced users.