Complete with a .22 LR conversion cylinder, the North American Arms Wasp .22 WMR/.22 LR Revolver accepts both .22 WMR and .22 LR ammunition. The 5-round revolver is crafted from stainless steel and features a stylized cylinder, a 1.13-inch vent-rib barrel and an exposed, skeletonized hammer. Half-moon bead sight. North American Arms Wasp .22 WMR/.22 LR Revolver - Handgun Revolvr Rimfire at Academy Sports