wipboten ACOG Rifle Scope 4x32 True Fiber Red Illuminated Crosshair BDC Gun Scopes Powered by fiber source, providing more bright environment and reticle illumination at day Feature bright daytime reticles using fiber optics, which collect ambient light. Made of Aircraft-Grade Lightweight Aluminum Alloy. Acog 4X32 red fiber optical sight scope Adjustable windage and elevation, multi-coated front lens, parallax free