J-frame model introduced in 1983. Stainless steel version of Model 51. .22 Magnum Kit Gun manufactured between 1983 and 1987. Chambered for .22 WRM. Fitted with a 4" barrel. Stainless steel finish and adjustable sights. Designation changes are: [None] 1983-1988; [-1] 1988-1990; [-2] 1988-1990.