The 1x30 M-16 Electosight by Barska has been developed for close-quarter targeting, and is perfect for CQB environments. Unlimited eye relief and a 1x magnification allows for quick target acquisition, and the brightness of illuminated red cross dot reticle can be adjusted to fit any lighting situation. The 1x30 M-16 Electrosight by Barska is a perfect fit for AR-15 style rifles, and can work in conjunction with an existing front sight. The M-16 Scope is 100% waterproof, fogproof, and shockproof, and can withstand repeated recoil without losing zero. Includes battery and standard weaver style base.