Smith & Wesson K Frame Model 19-4 Trigger .265" Wide Case Hardened 19184A

Smith & Wesson K Frame Model 19-4 Trigger — .265" Wide, Case Hardened, Old Style

Part Number: 19184A  |  Condition: Pre-Owned / Used  |  Caliber: .357 Magnum / .38 Special  |  Frame: K Frame

Upgrade or restore the trigger on your Model 19-4 Combat Magnum with this genuine Smith & Wesson factory trigger. At .265" wide, this is the standard-width trigger for the Model 19-4 — case hardened for durability and long service life. A direct OEM replacement that preserves the original trigger geometry and pull characteristics.

• Genuine S&W factory part — same specs, materials, and tolerances as original
• Compatible with S&W K Frame Model 19-4 revolvers chambered in .357 Magnum / .38 Special
• .265" wide — standard width; verify fitment with your specific model variant before ordering
• Case hardened finish for wear resistance
• Old-style design — verify compatibility with your specific serial range before ordering
• Pre-owned component in serviceable condition
• Professional installation recommended — gunsmith fitting may be required

How to Identify Your S&W Model Number

Swing out the cylinder and check behind the yoke on the frame. Model numbers were introduced in 1957–58. If no model number is present, your revolver may pre-date that era — contact us with your serial number and we'll help you find the right part.

Questions? Email or call USA Guns And Gear — we specialize in new, used, and new-old-stock Smith & Wesson double-action revolver parts.