A used metal firearm part displayed on a small stand in front of a white sign that reads 'Smith & Wesson Revolver J Frame Model 51 (Pre Model) .22 MRF (Magnum) .

Smith & Wesson J Frame Model 51 Revolver Hammer .375" Wide .22 WMR Old Style Used OEM - 51107

$69.99
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A used metal firearm part displayed on a small stand in front of a white sign that reads 'Smith & Wesson Revolver J Frame Model 51 (Pre Model) .22 MRF (Magnum) .
  • A used metal firearm part displayed on a small stand in front of a white sign that reads 'Smith & Wesson Revolver J Frame Model 51 (Pre Model) .22 MRF (Magnum) .
  • A small metallic mechanical part with a textured, weathered finish, photographed on a plain off-white surface.
  • A black plastic cylindrical component, possibly a connector or clip, shown horizontally on a plain white surface.
  • A small black handheld microphone clipped to a clear plastic display stand against a plain white background.
  • A black rectangular plastic component with a circular hole, mounted on a clear acrylic bracket against a plain white background.
  • A black rectangular replacement part with a translucent clear plastic holder, shown against a plain white background.
  • A used metal firearm part displayed on a small stand in front of a white sign that reads 'Smith & Wesson Revolver J Frame Model 51 (Pre Model) .22 MRF (Magnum) .
  • A small metallic mechanical part with a textured, weathered finish, photographed on a plain off-white surface.
  • A black plastic cylindrical component, possibly a connector or clip, shown horizontally on a plain white surface.
  • A small black handheld microphone clipped to a clear plastic display stand against a plain white background.
  • A black rectangular plastic component with a circular hole, mounted on a clear acrylic bracket against a plain white background.
  • A black rectangular replacement part with a translucent clear plastic holder, shown against a plain white background.
Smith & Wesson J Frame Model 51 Revolver Hammer .375" Wide .22 WMR Old Style Used OEM - 51107

Smith & Wesson J Frame Model 51 Revolver Hammer .375" Wide .22 WMR Old Style Used OEM - 51107

$69.99

This listing is for one (1) used Smith & Wesson J Frame Model 51 revolver hammer, .375" wide, .22 WMR, old style.

Part Details

  • Part Number: 51107
  • Condition: Used (OEM) — surplus
  • Caliber: .22 WMR (.22 Magnum) — Rimfire
  • Hammer Width: .375"
  • Style: Old Style
  • Frame: J Frame
  • Part Type: Hammer
  • Function: Strikes the firing pin to initiate ignition; a worn or damaged hammer causes light strikes, misfires, or failure to fire
  • Fits: See compatibility chart below

⚠️ Rimfire-Specific: This hammer is designed specifically for the Model 51 (.22 WMR rimfire). It is NOT interchangeable with centerfire J Frame hammers. Verify your model before ordering.

Model Compatibility

Model Caliber Frame Width Style Notes
Model 51 .22 WMR (.22 Magnum) J Frame .375" Old Style Rimfire only — NOT compatible with centerfire J Frame models

Verify your model and dash number before ordering. Contact us if you are unsure of compatibility.

Installation Note

Hammer replacement requires action disassembly by a qualified gunsmith. Proper hammer fit, trigger function, timing, and reliable ignition must be verified after installation. Factory replacement parts are manufactured to original S&W specifications and tolerances.

We stock OEM Smith & Wesson revolver and pistol parts — new, new old stock, and used. Questions? Email or call us for all your S&W needs.

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