TRUGLO Tru-Site Xtreme Micro 8 Light 19 Sight, APG Ultra-fine click adjustment for windage and elevation. Tool-less design. Large circular field of view. One-piece head reduces vibration. Adjustable level with two vertical bars. Level is illuminated by luminescent shooters ring. Reversible bracket for greater vertical adjustability. Three sets of markings for elevation, windage and pin adjustments. Lighted models are designed to reduce unwanted pin glare.