Built from a solid one-piece aircraft grade aluminum tube, the AIM SPORTS 1.5-4x CQB Scope was built to last. Designed to be used to withstand real-steel recoil. Vacuum sealed & nitrogen charged, weather-sealed housing ensures fog-proof and shock resistant performance. Special coated lenses provide superior light transmission and abrasion resistance. This scope's laser-etched mil-dot crosshair is illuminated with red, green, and blue reticles with an adjustable rheostat for brightness control and is adjustable for both windage and elevation. The Weaver/Picatinny 1913 base mount with integrated tri-rails that accept most rail mounting accessories.