The SIG SAUER WHISKEY4 5-20X50mm Waterproof Fogproof Riflescope offers the user with a broad spectrum of rugged 4:1 variable power. It negates the need for any guesswork when the adrenaline spikes. This riflescope is capable of delivering a crystal-clear image, even at high magnification. This riflescope delivers fast and intuitive adjustments with a removable magnification throw lever and locking zero-stop elevation turret. Its waterproof and fog-proof performance is provided by argon gas-purged lenses. This riflescope gives the user a broad spectrum of rugged 4:1 variable power that is designed to outperform. It is capable of delivering a crystal-clear image, even at high magnification. The riflescope includes front and second focal plane configurations with SIG’s illuminated Hellfire reticle.