The Holosun HE407K-GR-X2 is a micro open-reflex sight engineered specifically for subcompact and micro-compact pistols like the SIG Sauer P365, Springfield Hellcat, and similar optics-ready handguns. Featuring a 6 MOA green dot, it provides fast target tracking and superior visibility under bright or low-light conditions. Powered by Holosun’s Super LED technology, the HE407K-GR-X2 delivers up to 50,000 hours of battery life on a single CR1632 coin cell, with Shake Awake™ motion activation and Solar Failsafe™ backup to keep your sight ready when you need it most. The side battery tray allows for quick changes without removing the optic or re-zeroing. Built from 7075-T6 aluminum with a hard anodized finish, the HE407K-GR-X2 is both lightweight and rugged, offering 12 brightness settings (10 daylight + 2 night vision compatible) for all lighting environments. Compact, efficient, and reliable — this optic is an excellent choice for everyday carry or duty use.