save your money and get something decent. I am a avid predator hunter and a gunsmith. I was looking forward to using the MK390, but found it extremely heavy and bulky. This unit does not maginify 4x, 1x if that. in fact it made things look further away. you must get use to the reticle, you will have to move your head up and down in fine increments to see it. I think i will send it back and stick to my green predator light.
Pros: rugged, well constructed
Cons: Heavy, Not a 4x power, made in china
This review was written in the old system and had content requirements that are different than reviews written today.