The Holosun 507 Green Multi-Reticle Open Lens Solar Shake Awake 7075 Aluminum Miniature Pistol Reflex Sight is a versatile pistol optic engineered for fast target acquisition and rugged performance. It features a multi-reticle system with a bright green LED offering a 2MOA dot, an 8MOA circle, and a combined 2MOA dot inside the 8MOA circle, allowing shooters to choose the sight picture that best suits their shooting style and conditions. The open-lens design provides a broad field of view with unlimited eye relief and parallax-free performance at typical handgun distances. Constructed from durable 7075-T6 aluminum with a hard-anodized finish, the sight also incorporates Shake Awake technology to conserve battery life, solar-fueled power management to extend runtime, and up to 50,000 hours of operation from a single CR2032 battery. With ±50MOA adjustment range and precise 1MOA windage/elevation clicks, plus an IP67 waterproof rating, this reflex sight offers reliable performance for competition, duty, and everyday carry pistols.