Smith & Wesson revolver barrel on a white background with product details.

Smith & Wesson K Frame Model 18-3 Barrel, 4", Blue Steel, Pinned, Old Style, Used, Part# 1821

$109.99
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Smith & Wesson revolver barrel on a white background with product details.
  • Smith & Wesson revolver barrel on a white background with product details.
  • Close-up of a black firearm with '22 Long Rifle Ctg.' engraving on a white background
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  • Smith & Wesson revolver barrel on a white background with product details.
  • Close-up of a black firearm with '22 Long Rifle Ctg.' engraving on a white background
  • Black rifle stock on a white stand with a textured background
  • Black plastic component on a white background
  • Black metal component on a white stand with a blurred background
  • Close-up of a textured wall with a black object on a white surface
  • Blurred image of a black object on a white surface
Smith & Wesson K Frame Model 18-3 Barrel, 4", Blue Steel, Pinned, Old Style, Used, Part# 1821

Smith & Wesson K Frame Model 18-3 Barrel, 4", Blue Steel, Pinned, Old Style, Used, Part# 1821

$109.99

Smith & 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 barrel to have.

  • Compatibility: Smith & Wesson K Frame — Model 18-3
  • Caliber: .22 Long Rifle (rimfire)
  • Length: 4"
  • Finish: Blue Steel
  • Construction: Pinned
  • Style: Old Style
  • Condition: Used, original OEM factory part
  • Part Number: 1821

Installation Note

Barrel replacement requires professional gunsmith installation. Proper headspace, timing, and forcing cone alignment must be verified for safe function. Do not attempt installation without the appropriate tools and expertise.

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