This air rifle from marksman is a.177 caliber pellet combo.It comes equipped with a 4x32mm scope, along with adjustable truglo fiber optic sights, a rifled steel barrel, a black synthetic stock with a raised cheek comb, and an automatic cross bolt safety.Type: Air RifleAction: Break OpenCaliber: .177 Pellet/BBCapacity: 1Finish: BlackSights: 4x32mm ScopeWeight: 7.7 lbsStock: Black SyntheticScope: YesMagnification: 4xBarrel Type: Rifled SteelVelocity: 830 fps