This red dot uses the Trijicon RMR footprint standard. Essential info Footprint standard: Trijicon RMR footprint standard Reticle: 6 MOA dot [red] Window size [height x width]: 14.7 x 19.6 mm [0.58 x 0.77"] Total dimensions [length x width x height]: 38.1 x 30.5 x 25.4 mm [1.5 x 1.2 x 1.0"] Holosun HS407COMP-RD6 is a competition-focused open reflex red dot designed for maximum speed, visibility, and control. Built on Holosun’s COMP platform, it features a large viewing window and a bold 6 MOA dot, making it ideal for dynamic shooting, range use, and performance-driven pistol setups. Built for speed and fast transitions The 6 MOA dot is designed for instant visibility, allowing quicker target acquisition and faster follow-up shots. Especially at typical pistol distances, the larger dot helps you stay on target without overthinking your sight picture. Large window for better tracking The oversized 1.1 × 0.87" window gives you a wider field of view, helping you keep the dot in sight during recoil and rapid movement. This means smoother transitions between targets and more consistent shooting performance under pressure. Competition-ready design The HS407COMP shares its housing with the proven competition series, optimized for high-speed shooting environments. The clean 6 MOA dot setup keeps things simple, without unnecessary distractions or complex reticle options. Always ready with Shake Awake Shake Awake technology automatically activates the optic when movement is detected and powers it down when idle. Your last brightness setting is remembered, so the optic is always ready exactly how you left it. Quick battery replacement The side-loading CR1632 battery tray allows you to change the battery without removing the optic from your slide, preserving zero and minimizing downtime. Durable and reliable construction Machined from 7075-T6 aluminum and finished with a hard anodized coating, the HS407COMP is built to handle high round counts and demanding use. With IP67 water resistance and strong shock resistance, it performs reliably in real-world conditions. Key advantages 6 MOA dot for faster target acquisition Large competition window for better visibility and tracking Clean, simple reticle focused on speed Shake Awake with memory mode Side battery tray – no need to remove the optic Durable 7075-T6 aluminum construction Designed for competition and dynamic shooting Specification Magnification: 1x Reticle: 6 MOA Dot Reticle Color: Red Parallax: Free Eye Relief: Unlimited Lens Coating: Multi-Coated Battery Type: CR1632 Battery Life: Up to 100,000 hours Brightness Settings: 12 (8 daylight + 4 night vision) Window Size: 1.1 × 0.87" Housing Material: 7075-T6 Aluminum Adjustment per Click: 1 MOA Water Resistance: IP67 Vibration Resistance: 5000G