Riton Optics 5P212AS23: The 5 Primal with Riton HD glass, capped, zero resettable turrets and an integrated multiple location levers provides a wide range of magnification and all on a 30mm main tube. The exceptional low light capabilities will be just what youre looking for. Featuring .25 MOA Windage and Elevation Adjustment, Fast-Focus Eyepiece, Waterproof, Fog proof and Shockproof.