Smith & Wesson K Frame Hammer Assembly - Model 18 - .370" Spur - Used - .22 LR Rimfire K112A

Factory OEM Smith & Wesson K Frame Rimfire Hammer Assembly

Part Number: K112A
Compatibility: K Frame Model 18
Caliber: .22 LR (Rimfire)
Spur Width: .370" (Standard Spur)
Condition: Used
Frame Size: K Frame

This is an authentic Smith & Wesson factory hammer assembly designed specifically for K Frame Model 18 rimfire revolvers. The hammer is a critical fire control component that strikes the firing pin to ignite the primer. This hammer features a .370" standard spur for reliable cocking control.

Features:

• Genuine Smith & Wesson factory part
• Complete hammer assembly ready to install
• .370" standard spur width
• Used condition with functional operation
• Rimfire-specific design (not compatible with centerfire models)
• Direct replacement for worn or damaged hammers

IMPORTANT Compatibility Note: This hammer is designed ONLY for K Frame rimfire revolvers (Models 17, 18, 48, 617, 648, K22). Rimfire hammers have a different firing pin configuration and are NOT interchangeable with centerfire K Frame models (10, 12, 13, 14, 15, 16, 19, 64, 65, 66, 67). The hammer is the only K Frame part that is caliber-specific - all other internal parts interchange between rimfire and centerfire models.

Model 18 Compatibility: The Model 18 Combat Masterpiece is a K Frame .22 LR revolver designed for target shooting and training. This hammer assembly fits all Model 18 dash variants.

Installation: Professional gunsmith installation required. The hammer is an internal fire control component that requires complete disassembly of the revolver. Proper fitting, timing, and function testing are essential for safe operation.

How to Identify Your Smith & Wesson Model: Swing out the cylinder and check behind the yoke on the frame for the model number. Model numbers began in 1957-58. If you need assistance identifying your revolver or confirming compatibility, contact us with your serial number.

Questions? Contact us at sales@usagunsandgear.com or call 770-544-8075. We specialize in Smith & Wesson pistol and revolver parts - new, used, NOS, and refurbished.