The grip on the North American Arms 22 Magnum Holster Grip .22 WMR/.22 LR Revolver folds upward, and the extra cylinder allows you to use 2 types of ammunition. The barrel, frame and cylinders are made of stainless steel, and the revolver offers fixed front and notched rear sights. North American Arms 22 Magnum Holster Grip .22 WMR/.22 LR Revolver - Handgun Revolvr Rimfire at Academy Sports