Smith & Wesson revolver part on a white background with a label

Smith & Wesson J Frame Model 63 .22 LR 4" Barrel Stainless Steel Used - 638

$139.99
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Smith & Wesson revolver part on a white background with a label
  • Smith & Wesson revolver part on a white background with a label
  • Metal component on a stand with a white background
  • Metallic gun barrel with 'Smith & Wesson' engraving on a white background
  • Metal component with 'HELLA' branding on a white background
  • Metallic rifle barrel with '22 Long Rifle CTG' engraving on a white background
  • Clear plastic hook with black clip on a textured gray surface
  • Black marker on a textured white surface
  • Small metal stand with a wheel on a textured surface
  • Smith & Wesson revolver part on a white background with a label
  • Metal component on a stand with a white background
  • Metallic gun barrel with 'Smith & Wesson' engraving on a white background
  • Metal component with 'HELLA' branding on a white background
  • Metallic rifle barrel with '22 Long Rifle CTG' engraving on a white background
  • Clear plastic hook with black clip on a textured gray surface
  • Black marker on a textured white surface
  • Small metal stand with a wheel on a textured surface
Smith & Wesson J Frame Model 63 .22 LR 4" Barrel Stainless Steel Used - 638

Smith & Wesson J Frame Model 63 .22 LR 4" Barrel Stainless Steel Used - 638

$139.99

Smith & Wesson J Frame Model 63 Barrel - 4 Inch

Part Number: 638
Condition: Used - Good
Frame: J Frame
Model: 63
Caliber: .22 LR (Long Rifle)
Barrel Length: 4 inches
Finish: Stainless Steel
Style: Old Style (Pre-Lock)
Weight: 5 oz

Product Details

Genuine Smith & Wesson factory barrel for the J Frame Model 63 revolver chambered in .22 Long Rifle. This 4-inch stainless steel barrel is the old style (pre-lock) configuration, making it ideal for restoring or repairing earlier production Model 63 revolvers. The stainless finish provides excellent corrosion resistance and a clean, classic appearance.

About the Model 63

The Smith & Wesson Model 63 is a stainless steel J Frame revolver chambered in .22 Long Rifle, often called the "Kit Gun" — a lightweight, versatile rimfire revolver designed for outdoor use, small game hunting, and plinking. The Model 63 features a 6-shot cylinder and was produced in both 2-inch and 4-inch barrel configurations. The old style (pre-lock) variants are highly sought after by collectors and shooters who prefer the traditional S&W action without the internal lock.

Function & Compatibility

This barrel is specifically designed for Smith & Wesson J Frame Model 63 revolvers chambered in .22 LR. As a rimfire barrel, it is not interchangeable with centerfire J Frame barrels. Proper installation requires precise fitting to ensure correct barrel-cylinder gap and alignment. Professional gunsmith installation is strongly recommended.

How to Identify Your S&W Model

To determine your Smith & Wesson revolver model number, swing out the cylinder and check behind the yoke on the frame for the model number stamped into the metal. Model numbers began in 1957-58. The Model 63 will be clearly marked. If you have questions about compatibility, contact us with your serial number and we can verify fitment.

Installation & Specifications

  • Professional gunsmith installation required - not a drop-in part
  • Requires specialized tools and precise fitting
  • Barrel-cylinder gap must be set correctly (0.004-0.008 inches)
  • Barrel must be properly torqued and aligned
  • Front sight may require adjustment or replacement
  • Factory OEM part manufactured to exact S&W specifications
  • Used part inspected for bore condition and thread integrity
  • Compatible with J Frame Model 63 revolvers (.22 LR only)
  • Rimfire chambering — NOT compatible with centerfire J Frame models

Barrel Specifications

  • Length: 4 inches (measured from forcing cone to muzzle)
  • Caliber: .22 Long Rifle (rimfire)
  • Finish: Stainless Steel
  • Style: Old Style (Pre-Lock)
  • Frame: J Frame

Condition Notes

This is a used OEM barrel removed from a functioning Smith & Wesson Model 63 revolver. Shows normal wear consistent with use. Bore has been inspected and is in good condition with strong rifling. All threads are intact and functional. Stainless finish may show minor handling marks or light surface wear typical of used revolvers.

Contact Us

We specialize in Smith & Wesson pistol and revolver parts - used, new old stock, refurbished, and new. Our team has extensive knowledge of S&W firearms and can help you find the exact parts you need for your J Frame revolver.

Questions? Email sales@usagunsandgear.com or call 770-544-8075

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