The North American Arms Mini-Master is a five-shot revolver that evolved from the companys popular 22 Mag frame series resulting in increased stability and accuracy. Features include a 4 stainless steel heavy vent barrel bull cylinder and oversized textured rubber grips. The Mini-Master is chambered in 22LR or 22 Mag has a length of just under 8 width of less than an inch and a weight of 10.7 ounces. Details Our Black Widow and 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 in enhanced stability and accuracy for the shooter.