Designed with the latest optical technology and field-tested to meet the strictest quality standards, Barska's Ridgeline P4 Riflescope is built to measure up to the toughest performance standards. This model is equipped with external locking windage and elevation adjustments, fully multi-coated optics, and fast-focus eyebell. This one-piece tube construction features a center-lit green, red, and blue illuminated P4 sniper glass etched reticle for low-light targeting. The Ridgeline P4 also features Barska's Accu-Lock system, which uses a coil spring positioned within the scope to securely lock the inner tube and allows the scope to stay locked dead-on to the target, shot after shot. 100% waterproof, fogproof, and shockproof. Includes flip-up scope caps.