Weaver Tactical Scope - 4-20x50 30mm Side Focus with Mil Dot Reticle http://www.amazon.com/gp/product/B002RGCIGO?tag=sukses2015-20 Powerful 5 times magnification One-piece construction with argon purged tubes to eliminate internal fogging Side focus parallax adjustment with reset-to-zero turrets and first focal plane reticles Features 30mm tubes and Mil Dot reticles Fully multi-coated lenses wextra hard coating of exterior lenses