Maximum control and accuracy shot after shot. BARSKA Tactical scopes are designed to give you as much control as possible for extreme type shooting. They have been designed with features like side adjustable parallax and a first focal plane Mil-Dot reticle that allows you to estimate range at all power settings. Tactical scopes also include our Accu-Lock system. BARSKA’s Accu-Lock system 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. Rugged and waterproof, you’re always on target with BARSKA’s Tactical scopes.