NcSTAR NC Star VEVOFP41650G, Vism Evolution Seriesx 40mm, 4-16x50mm, P4 Sniper Ocular lens Quick focus ring Rheostat knob High Resolution Glass for Excellent Performance in a variety of field conditions Fully Multi Coated Optics for Optimum Clarity Glass Etched Reticle with Blue and Green illumination Waterproof, Shockproof, Fogproof - capable of withstanding the harshest surroundings Easy to adjust Locking Target Turrets also feature Zero Reset