The Crosman 760 Pumpmaster is one of the most sold air rifles in American history. Variable-power multi-pump pneumatic design allows 3 to 10 pump strokes for adjustable velocity. 177 caliber pellets or BBs. Introduced in 1966, it has been in continuous production with updates for over 50 years. Type: Rifle Action: Spring Piston Caliber: 177 Cal Capacity: 18 Year introduced: 1966, USA Weight: 32 oz Overall length: 36.6" Status: Active Intended use: backyard, youth, beginner