With absurdly long battery life (years on a single AA), you never need to turn off this sight. The dot point of aim is dead simple to acquire, and since its parallax free it stays on target even if your head moves. This is the only electronic sight I've used that I consider every bit as reliable as iron sights. The CompM4 is built like a tank, so I'm not worried about damaging it or knocking it off zero. I'm hard pressed to name a single bad thing about it--I suppose the tube length is a little long, although with both eyes open (Bindon Aiming Concept) the tunnel vision effect is negligible. This is a top notch sight; I absolutely love mine.
- How accurate was the sizing? Perfect
- Please tell us about the quality of the product. Built like a tank
- Was the product free of any manufacturer defects? Yes.