A small black metal spring part displayed on a white surface next to a printed identification card for a Smith & Wesson revolver main spring.

S&W K Frame Model 12 Airweight Main Spring Old Style Used - 12141A

$6.99
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A small black metal spring part displayed on a white surface next to a printed identification card for a Smith & Wesson revolver main spring.
  • A small black metal spring part displayed on a white surface next to a printed identification card for a Smith & Wesson revolver main spring.
  • A black metal main spring part for a Smith & Wesson Revolver K Frame Model 12, displayed on a clear plastic stand with an informational paper label showing the part number and manufacturer USA GUNS AND GEAR.
  • A black metal flathead screwdriver with a double-pronged head, resting on a small clear plastic display stand against a white background.
  • A black metal flat tool with a single prong on one end, displayed on a clear plastic stand against a light gray background.
  • A long, thin black plastic or rubber tool with a hooked end, lying on a light gray textured surface.
  • A black metal flathead screwdriver or pry tool with a forked tip, resting on a white surface.
  • A long, flat black metal tool with a bent hook-like end, photographed on a light gray surface.
  • A small black metal spring part displayed on a white surface next to a printed identification card for a Smith & Wesson revolver main spring.
  • A black metal main spring part for a Smith & Wesson Revolver K Frame Model 12, displayed on a clear plastic stand with an informational paper label showing the part number and manufacturer USA GUNS AND GEAR.
  • A black metal flathead screwdriver with a double-pronged head, resting on a small clear plastic display stand against a white background.
  • A black metal flat tool with a single prong on one end, displayed on a clear plastic stand against a light gray background.
  • A long, thin black plastic or rubber tool with a hooked end, lying on a light gray textured surface.
  • A black metal flathead screwdriver or pry tool with a forked tip, resting on a white surface.
  • A long, flat black metal tool with a bent hook-like end, photographed on a light gray surface.
S&W K Frame Model 12 Airweight Main Spring Old Style Used - 12141A

S&W K Frame Model 12 Airweight Main Spring Old Style Used - 12141A

$6.99

Smith & Wesson K Frame Model 12 Airweight Main Spring – Old Style (Used)

OEM Smith & Wesson replacement main spring for the K Frame Model 12 Airweight revolver chambered in .38 Special. This is the old style main spring (pre-engineering change) in used, serviceable condition — a solid option for gunsmiths and collectors restoring or repairing vintage K Frame revolvers.

Part Details

  • Part Number: 12141A
  • Condition: Used – Old Style
  • OEM Manufacturer: Smith & Wesson
  • Frame Size: K Frame
  • Caliber: .38 Special

Compatible Models

This old-style main spring is compatible with the following K Frame revolvers (verify dash number before ordering):

  • Model 10 (early variants)
  • Model 12 / 12-1 / 12-2 / 12-3
  • Model 13 (early variants)
  • Model 14 (early variants)
  • Model 15 (early variants)
  • Model 64 (early variants)
  • Model 65 (early variants)
  • Model 66 (early variants – pre 66-4)

Note: Always verify compatibility with your specific dash number before installation. Old-style and new-style springs may differ in geometry.

Condition Note

This is a used OEM part removed from a functioning revolver. It has been inspected and is in serviceable condition. Ideal for gunsmiths sourcing hard-to-find vintage S&W components.

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