Our Mini-Master Mini-Revolvers evolved from our popular .22 Magnum frame series and include the time tested design characteristics that are incorporated in all NAA Mini-Revolvers. The result is enhanced stability and accuracy for the shooter. The Mini-Master have a Heavy Vent Barrel, a Bull Cylinder, Oversized Black Rubber Grips and comes with either adjustable Sights for elevation or fixed Low Profile Sights. Features: 22 LR conversion cylinder Heavy vent barrel Bull cylinder