Burris 201951 Matte Black Riflescope w/30MM Tube/Ballistic Plex Reticle At their core, SixX Series scopes boast some of the world's finest precision ground lenses. They are then index match multi coated with HiLume StormCoat finish, which delivers extraordinary clarity from the day's first light until the sun drops behind the western horizon. Burris uses double spring tension to lock internal components in place within a heavy walled 30mm tube that defines rugged. Steel on steel click adjustments make for positive, precise sighting. With a 6:1 magnification ratio, and powers from 2x to 12x, these scopes excel in the entire range of hunting applications. Stalk heavy cover with your SixX set at 2 power, knowing its wide field of view, crisp optics and four inches of eye relief allow you to put quick shots on fast moving game. Climb into a tree stand, use the SixX at 6 power for the perfect balance of power and field of view. You'll have a clear, expansive view from 50 to 200 yards out. Rotate the independent rubber coated power ring to 12, and settle the third hash line on the Ballistic Plex reticle behind the shoulder of a bull elk, knowing you can make a perfectly ethical one shot kill at 400 yards.