The NAA Mini Revolver fitted with the Holster Grip — a two-piece grip that folds to contain the cylinder and barrel within the grip profile, creating a form factor small enough to appear as just a large grip or a pendant. Type: Revolver Action: Single-Action Caliber: 22 WMR Capacity: 5 Year introduced: 1985, USA Weight: 5.5 oz Overall length: 3.625" Status: Active Intended use: concealed carry