If you are looking for the most suitable reddot for you, it is definitely not how you see it externally. Because red dot is used for aiming and there are two important details that affect aiming. Parallax and point size. Parallax free for this red dot comes from being expensive. This is so beautiful! The big point does not make your job easier. The general problem of 552s is that I think it has a very big spot size. The spot size in this model is 2 MOA. So it's pretty small. 1.5 MOA and smaller are not recommended. 2 MOA is very ideal. It is quite good that the light intensity can be adjusted. Because in different conditions, the light may disturb the brightness or be invisible. Be careful not to use red dot using A123 battery. Because if you forget the circuit open A123 batteries are around $ 4 dollars. This model uses CR2032 batteries. This battery is one of the most common and cheapest batteries. So this is a big advantage. Lens width, spot size for 4.5 / 5 1X and for reflex use and it is very useful with its thin frame. Its outer beauty is also satisfying. Cheap red dots work unstable and have parallax problems. If you want to use it without requiring repair for a very long time, this red dot is for you.