The UUQ 3-9x40 Compact Rifle Scope features a red/green illuminated crosshair with a center mil-dot for fast target acquisition, and 5 brightness levels adapting to daylight, shadows, or low-light hunting conditions. The 3-9x magnification and 40mm fully green multi-coated lenses provide 99% light transmission, with built-in parallax correction ensuring the reticle stays on target from 50 to 300 yards. Lightweight and weather-resistant, the high-strength aluminum body with protective seals offers basic water resistance for light rain and humidity. It includes detachable front/rear lens caps to guard against dust during transport. The fast-focus eyepiece and diopter adjustment allow for tool-free reticle clarity adjustment in 2 seconds, with a +/-3 diopter range accommodating nearsighted or farsighted users. The 20mm rail mount is ready in 30 seconds with dual thumb screws, fitting all standard 20mm rails (Picatinny/Weaver) without the need for hex keys.