Vortex 6-24x50 Long-Range Riflescope

From the Amazon Listing

• The Diamondback Tactical First Focal Plane 6-24x50 stands at the intersection of precision and value, delivering an impressive array of features and performance.
• Extra-low dispersion glass and fully multi-coated lenses transmit a crisp, bright sight picture. The first focal plane, glass-etched reticle keep subtensions accurate throughout the 4x zoom range.
• The precision-glide erector system uses premium components in the zoom lens to ensure smooth magnification changes under the harshest conditions.
• Exposed turrets and a side parallax knob give users the tools needed for long range application. The fast focus eyepiece allows quick and easy reticle focusing.
• The single piece 30mm tube is shockproof. Strong o-ring seals and nitrogen purging guarantee waterproof and fogproof performance.
• Backed by our unlimited, unconditional, lifetime, VIP Warranty. A fully transferable promise to repair or replace your item if it becomes damaged/defective. Does not cover loss, theft, deliberate damage or cosmetic damage that doesn't hinder performance.