Things I liked:I am a total beginner so I am not technical but this is exactly the gun I was looking for. This was the first time I have "sighted" a gun so I am not sure how to compare this sight to others but within 10 minutes I had it sighted so I could hit a quarter at 40 yards. It started to rain so that was as much as I played with it but seriously for an air rifle it is as good as any 22... It was as advertised! Things I would have changed:None What others should know:It is plug and play!