Smith & Wesson K Frame Hammer - Models 17, 18, 48 - .375" Spur - Old Style - Used - .22 Rimfire K113B model 31 About the Model 29:

About the Model 29:

K Frame (Round Butt Only): Model 10

Smith & Wesson Model 3913 Hammer & Stirrup Assembly - Part 3913E1

265" Confirmed fit Verify fitment with your serial number before ordering

357 Magnum line — the heavy-duty workhorse built for law enforcement and duty use

Smith & Wesson K Frame Hammer - Models 17, 18, 48 - .375" Spur - Old Style - Used - .22 Rimfire K113B model 31 About the Model 29:Factory OEM Smith & Wesson K Frame Rimfire Hammer Part Number: K113B Compatibility: K Frame Models 17, 18, 48 (Rimfire Only) Caliber: . 22 LR . 22 Magnum (Rimfire) Spur Width: . 375" (Target Spur) Style: Old Style Condition: Used Frame Size: K Frame This is an authentic Smith & Wesson factory hammer designed specifically for K Frame rimfire revolvers. The hammer is a critical fire control component that strikes the firing pin to ignite the primer.