RE: Sightron - Bigsky
I just called Sightron's customer service and they said that the Big Sky series is a one piece scope, and is waterproof, shookproof, and fogproof.
I was looking into getting the Sll Big Sky 3-12x 42mm. I like the fact that is weighs only 13oz. Per the specs onSightron's website, the ocular lens looks like it's rather large.