Crosman Vapor Max Pump Air Rifle .177 BlackCrosman Vapor Max Pump Air Rifle . 177 Black Caliber: . 177; Powerplant: Variable Pump; Energy: Up To 14 Foot Pounds; Velocity: Up To 1100 FPS With Alloy Pellets; Velocity: Up To 900 FPS With Lead Pellets; Pump Levels: 2 Pumps Up To 450 FPS, 5 Up To 900 FPS, 10 Up To 1100 FPS; Action: Bolt Action; Rifled Barrel: Yes; Barrel Length: 21. 75 in; Magazine: 10 Shot Auto Indexing; Includes Two 10 Shot Magazines; Trigger: Non Adjustable Two Stage; Front