The Gamo Viper Express is a combination gun shooting both 177 caliber pellets and .22 caliber shotshells from an over-under dual-barrel layout. Break-barrel cocking, synthetic stock, and fiber optic sights. Designed for pest control use where the shotshell capability is useful for flying pests. Type: Rifle Action: Spring Piston Caliber: 177 Cal Capacity: 1 Year introduced: 2005, Spain Weight: 96 oz Overall length: 43" Status: Discontinued Intended use: pest-control, backyard