This looks like a great sight, built in rail, solar, waterproof...

Anyone try one?

Is it the "right" height to co-witness?

I did not like the unit, I used it on a HK MP7 and I was totally disappointed.  if you are looking for a compact sight the Doctor sight are a much better alternative.  

The sight turns on with the big button on the side it also controls the brightness, but there is no feel to each click and it makes no difference from one setting to another.  the small tube makes it look like seeing through a toilet tube roll. don't like and don't recommand it.