S&W K Frame Model K38 Pre-Model 15 Pinned Barrel 4" .38 Special – Part# 1522

Smith & Wesson K Frame Model K38 Pre-Model 15 Pinned Barrel 4" – Old Style, 5-Screw Era

Restore your K38 or Pre-Model 15 to factory-correct configuration with this rare factory-original 4" pinned barrel. The pinned barrel is the defining feature of pre-1982 S&W revolvers — a cross-pin through the frame and barrel shank locks the barrel in position, preventing rotation under recoil and ensuring consistent accuracy. S&W discontinued barrel pinning in 1982, making correct-era pinned barrels increasingly scarce and highly sought after for restoration and collector builds. This old-style blue steel barrel is caliber-specific and the correct replacement for the K Frame Model K38 (Pre-Model 15) chambered in .38 Special.

• Part Number: 1522
• Fits: Smith & Wesson K Frame Model K38 / Pre-Model 15
• Caliber: .38 Special – caliber-specific part
• Barrel Length: 4"
• Type: Pinned Barrel (cross-pinned, pre-1982 style)
• Finish: Blue Steel
• Era: 5-Screw Design (Old Style)
• Condition: Used (factory original)
• Installation: Professional gunsmith fitting required – barrel fitting, timing, and pin installation are critical operations

Factory Replacement Quality

Genuine Smith & Wesson factory barrel manufactured to the exact specifications and tolerances of the original — same rifling, same dimensions, same reliable accuracy. Barrels are caliber-specific and not interchangeable between calibers.

About Pinned Barrels

S&W pinned barrels (produced through 1982) are considered by many collectors and shooters to represent the gold standard of S&W revolver construction. The cross-pin prevents barrel rotation under sustained fire, maintaining consistent forcing cone alignment and accuracy over time. Replacing a non-pinned barrel with a correct pinned barrel restores both the mechanical integrity and the collector value of a pre-model revolver.

About the K38 / Pre-Model 15

The K38 Masterpiece (later designated the Model 15 Combat Masterpiece) is one of the most celebrated K Frame revolvers ever produced. Pre-model revolvers predate the 1957–58 model number system; if your revolver has no model number stamped behind the yoke, contact us with the serial number and we'll confirm compatibility.

Questions? Call or email us — we're happy to help you get the right part the first time.