NcStar's Shooter rifle scope 3-9x 40mm is completely waterproof, fogproof and dustproof. The glass is crystal clear and the fit and finish are beautiful. It has multi-coated lenses and variable power magnification.
Specifications:

Magnification	3-9x
Objective	40mm
Field of View	36.60-13.60 ft @ 100 yds
Eye Relief	2.80"-3.30"
Tube Diameter	1"
Length	12.20"
Weight	16.10 oz
Finish	Black
Reticle	P4 Sniper
Adj Size	.25 MOA @ 100 yds
Parallax Adjustment
Exit Pupil Range	13.3-4.4mm
Proofs	Waterproof
Coating Type
Optic Coating	Multi-Coated