Smith & Wesson K Frame Model 18-3 Barrel, 4", Blue Steel, Pinned, Old Style, Used, Part# 1821 M&P9 Compact it may not have a

it may not have a model number stamp

38 Special — ✗ Not compatible — centerfire hammer Important Notes

Old style thumb piece design

Precision-manufactured to exact specifications

Smith & Wesson K Frame Model 18-3 Barrel, 4", Blue Steel, Pinned, Old Style, Used, Part# 1821 M&P9 Compact it may not have aSmith & Wesson K Frame Model 18 3 Barrel 4", Blue Steel, Pinned A genuine used Smith & Wesson factory barrel pulled from a Model 18 3 revolver. The pinned barrel construction is a hallmark of classic S&W craftsmanship from this era, and this old style 4" blue steel unit is the correct replacement for restoring your K Frame . 22 LR to factory configuration. Whether you're repairing a shooter or completing a period correct restoration, this is the