Premium 4-16x56SF Long Range Precision Riflescope. This long range variable optic is precision CNC machined from solid 6061-T6 aluminum, built around a robust 30mm one-piece tube for extreme recoil resistance. It features a large 56mm multi green coated objective lens, etched MIL reticle with red/green dual illumination. Boasting side focus parallax adjustment and a built-in bubble level, it delivers sharp, distortion-free long-range imaging. Dual-color lit reticle comes with multiple adjustable brightness levels to fit dawn, dusk and full sunlight conditions.