A small dark metal hammer assembly part displayed on a clear stand next to a printed label card for a Smith & Wesson Revolver hammer assembly, photographed against a plain light background.

Smith & Wesson K Frame Model 12 Airweight Hammer Assembly .240" Wide Spur, Used – Part# 12112B

$29.99
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A small dark metal hammer assembly part displayed on a clear stand next to a printed label card for a Smith & Wesson Revolver hammer assembly, photographed against a plain light background.
  • A small dark metal hammer assembly part displayed on a clear stand next to a printed label card for a Smith & Wesson Revolver hammer assembly, photographed against a plain light background.
  • A used metal hammer assembly for a Smith & Wesson revolver, displayed next to a white paper label card on a white surface.
  • A small dark metal mechanical part or tool component displayed upright on a clear plastic stand against a plain light background.
  • A small dark metal mechanical part or tool component displayed on a clear plastic stand against a plain light background.
  • A dark metal firearm trigger assembly, likely a receiver trigger or pistol trigger component, resting on a white surface.
  • A dark metal mechanical component or tool part with a worn, used surface, photographed on a white surface with a soft-focus background.
  • Close-up of a digital caliper measuring a small brown textured strap, with the display reading 0.23 mm.
  • A small dark metal hammer assembly part displayed on a clear stand next to a printed label card for a Smith & Wesson Revolver hammer assembly, photographed against a plain light background.
  • A used metal hammer assembly for a Smith & Wesson revolver, displayed next to a white paper label card on a white surface.
  • A small dark metal mechanical part or tool component displayed upright on a clear plastic stand against a plain light background.
  • A small dark metal mechanical part or tool component displayed on a clear plastic stand against a plain light background.
  • A dark metal firearm trigger assembly, likely a receiver trigger or pistol trigger component, resting on a white surface.
  • A dark metal mechanical component or tool part with a worn, used surface, photographed on a white surface with a soft-focus background.
  • Close-up of a digital caliper measuring a small brown textured strap, with the display reading 0.23 mm.
Smith & Wesson K Frame Model 12 Airweight Hammer Assembly .240" Wide Spur, Used – Part# 12112B

Smith & Wesson K Frame Model 12 Airweight Hammer Assembly .240" Wide Spur, Used – Part# 12112B

$29.99

Smith & Wesson K Frame Model 12 Airweight – Hammer Assembly

Part Number: 12112B
Condition: Used, Original OEM
Spur Width: .240" Wide Spur
Frame Size: K Frame
Caliber: .38 Special

Compatible Models

This hammer assembly is compatible with the following Smith & Wesson K Frame Model 12 Airweight revolvers (all dash variants):

  • Model 12 (original)
  • Model 12-1
  • Model 12-2
  • Model 12-3

Note: The Model 12 is a centerfire .38 Special revolver. This is a centerfire hammer and is not compatible with rimfire K Frame models (17, 18, 48, 617, 648).

Part Details

  • OEM Smith & Wesson replacement part
  • .240" wide hammer spur for positive thumb cocking
  • Drop-in fit for all Model 12 dash variants
  • Suitable for gunsmiths and experienced hobbyists

Condition Notes

This is a used OEM part removed from a functioning revolver. It has been inspected for serviceability. Normal wear consistent with use. No cracks or damage. Recommended for professional installation.

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