Smith & Wesson K Frame Model 19 Thumb Piece & Nut .357 Magnum Used cylinder assembly 22 Magnum 8-shot)

22 Magnum 8-shot)

with heavily compensated pistols

Suitable for pre-model J Frame revolvers

Verify trigger pull weight

Part Number: K874

Smith & Wesson K Frame Model 19 Thumb Piece & Nut .357 Magnum Used cylinder assembly 22 Magnum 8-shot)Smith & Wesson K Frame Model 19 Thumb Piece & Nut Used Part# 19179G Compatible Models: Model 19 (. 357 Magnum, K Frame) This listing is for the thumb piece and nut assembly only. What It Does Controls cylinder release operation. The thumb piece and retaining nut work together to ensure secure, reliable cylinder swing out function. Compatibility Smith & Wesson Model 19 (. 357 Magnum, K Frame) Condition Used, old style. Authentic S&W factory component.