The Beatles, 1966. The pivot to studio art — Eleanor Rigby, Tomorrow Never Knows. The bridge to Sgt Pepper.
From Wikipedia
A revolver is a repeating handgun with at least one barrel and a revolving cylinder containing multiple chambers for firing. Because most revolver models hold six cartridges before needing to be reloaded, revolvers are commonly called six shooters or sixguns. Due to their rotating cylinder mechanism, they may also be called wheel guns.