 Its purpose is similar to that of the periscope rifle; it allows its operator to both see and attack an armed target, without exposing the operator to counterattack.The CornerShot's shooting range is claimed to be accurate and effective to 100 meters with 9×19mm, .40 S&W, and .45 ACP pistols, and is claimed to be effective to 200 meters with a 5.7×28mm pistol.The device is available in several variations, including the Beretta 92F, a model widely used by US security forces, the Glock, SIG Sauer, and CZ.