Smith & Wesson Model 51 J Frame Thumb Piece & Nut Blue Steel .22 Magnum, Part# 51157 n627n The bolt indexes and locks 414040000 vintage parts Color:LIGHT WOOD 44 inches in diameter

The bolt indexes and locks the cylinder in alignment with the barrel — a common wear item on high-round-count revolvers and a frequent restoration part

Designed specifically for Smith & Wesson K Frame Model 17 revolvers

This used OEM barrel is the correct old-style pinned configuration for pre-Model 19-4 and 19-4 revolvers — an essential component for restoration

Not compatible with older pre-1992 models which use a different sight design

Smith & Wesson Model 51 J Frame Thumb Piece & Nut Blue Steel .22 Magnum, Part# 51157 n627n The bolt indexes and locks 414040000 vintage parts Color:LIGHT WOOD 44 inches in diameter The bolt indexes and locks the cylinder in alignment with the barrel — a common wear item on high round count revolvers and a frequent restoration part Designed specifically for Smith & Wesson K Frame Model 17 revolvers