Barska Tactical Scopes are designed to give users as much control as possible for extreme-type shooting. The scopes have been designed with features like parallax adjustments and a First Focal Plane Mil-Dot reticle that allows users to estimate range at all power settings. Tactical Scopes also include Barska's Accu-Lock system, which utilizes a coil spring positioned within the scope to securely lock the inner tube. This coil positioning system allows the scope to stay locked dead-on to the target shot after shot. First Focal Plane Mil-Dot reticle allows users to estimate range at all different magnification settings. With the reticle at first focal plane, the reticle expands as the magnification increases. This creates dead-on precision and accuracy.