Incredibly rugged, absolutely waterproof. Totally accurate. Proven in the field. The Leupold Mark 4 LR/T riflescopes have a combination of performance and features that have made them the choice of some of the world’s most elite shooters, in both tactical circles and the hunting and competitive shooting worlds.   Each Mark 4 LR/T scope features the Multicoat 4 system that delivers extreme clarity from edge to edge of the visual field, outstanding contrast, and a bright sight picture even in extreme low-light conditions. Side focus parallax adjustment for fast, easy parallax focusing from 50 yards to infinity, from any shooting position. Finger-adjustable ¼-MOA windage and elevation adjustments with audible, tactile clicks. The 30mm maintube offers incredible strength and allows for the greater range of windage and elevation adjustment. 140-MOA of elevation adjustment and 45-MOA of windage adjustment. Flip-open lens covers are standard issue with each Mark 4 LR/T riflescope.  Rugged and absolutely waterproof, these LR/T riflescopes helped to set the Leupold Mark 4 standards, and can withstand incredible abuse.