.22 LR. 4" barrel length. SN: 6K24401. Blued metal finish with casehardened hammer and trigger mounting Smith & Wesson medallion checkered Goncalo Alves grips. Double action hand ejector six-shot revolver with full length fluted barrel mounting adjustable target rear and matted front ramp sights. Item features a pinned barrel, three screw frame, and a recessed cylinder. Standard make and model markings overall including MOD. 18-3 to the inner frame and Smith & Wesson's monogram trade mark to the sideplate.