The Barska 5-20x50mm Benchmark Rifle Scope is an accurate and durable side-parallax scope of exceptional optical quality. With a Mil-Dot reticle on the first focal plane (FFP), there is proportional tracking throughout the magnification ranges regardless of the rifle scope's power being used. The benchmark rifle scope is waterproof, fogproof and shockproof with fully multi-coated optics for sharp distortion-free views. Backed by Barska's limited lifetime warranty, this is a scope you can trust.