Smith & Wesson L-Frame Model 686-5 .357 Magnum Hammer Block, New Style - Part #686120

Smith & Wesson L-Frame Model 686-5 Hammer Block

Keep your revolver running safely with this genuine Smith & Wesson replacement hammer block for the L-Frame Model 686-5 chambered in .357 Magnum. The hammer block is a critical internal safety component that prevents the hammer from contacting the firing pin unless the trigger is fully depressed — an essential part of S&W's transfer bar safety system.

Part Details

• Part Number: 686120
• Style: New Style
• Condition: Used, original OEM part
• Caliber: .357 Magnum / .38 Special
• Frame Size: L-Frame

Compatible Models

This new-style hammer block is designed for the Model 686-5 and may also be compatible with other new-style L-Frame revolvers, including:

• S&W Model 686 (later production, new style)
• S&W Model 686-4
• S&W Model 686-5
• S&W Model 686-6
• S&W Model 686 Plus (7-shot variants, verify fitment)

Note: Early-production L-Frame models (686 through 686-3) use an older-style hammer block. Always verify your model's production date and style before ordering. When in doubt, compare your existing part to the photos.

Why Replace Your Hammer Block?

A worn or damaged hammer block can compromise the safety and reliability of your revolver. Replacing it with a genuine OEM part restores proper function and ensures your firearm operates as designed.