The Benchmark Series of Riflescopes by Barska contain a high degree of accuracy, durability and exceptional optical quality. This Riflescope Series features the first focal plane mil-dot reticle that allows you to estimate range at all different magnification settings, creating dead-on precision and accuracy. Also featured with the Barska Benchmark Series is an Accu-Lock system that utilizes a coil spring positioned within the riflescope to securely lock the inner tube. This coil positioning system allows the scope to stay locked dead-on to the target shot after shot. In addition, the Benchmark Riflescope Series has side parallax adjustments which allows fine adjustment on parallax correction without taking your eyes off the target. All Benchmark riflescopes are waterproof, fogproof and shockproof, and features fully multi-coated optics for sharp distortion-free views.