North American Arms Mini Revolver, Ranger II, Single Action, Revolver, 22 WMR, 1.625 Barrel, Full Ribbed Barrel, Matte Finish, Stainless Steel, Full Bead Blast, Silver, Rosewood Grips, Fixed Sights, 5 Rounds, Break Open Cylinder NAA-22M-R The NAA .22 Magnum is the most popular Mini-Revolver ever produced. With the many current accessories, it is versatile for many applications and is the standard by which other Mini-Revolvers are judged.