Smith & Wesson N Frame Model 29 Hammer Block - .44 Magnum 29120A

Smith & Wesson Model 29 Hammer Block

Genuine Smith & Wesson factory hammer block for Model 29 revolvers. The hammer block is a critical safety component that prevents the hammer from striking the firing pin unless the trigger is fully pulled to the rear. This essential part is the heart of the revolver's transfer bar safety system, ensuring the firearm cannot discharge unless intentionally fired.

Key Features:

• Factory S&W hammer block in used condition
• Critical safety component
• Prevents accidental discharge
• Part of the transfer bar safety system
• Precision-machined to factory specifications
• Ideal for restoration or replacement projects

Compatibility:

Designed for Smith & Wesson N Frame Model 29 revolvers chambered in .44 Magnum. Hammer blocks and other internal safety components typically interchange across N Frame models of the same era, though professional fitting may be required to ensure proper function and safety.

Installation Notes:

Professional gunsmith installation and fitting REQUIRED. The hammer block is a critical safety component that must be properly installed and timed to ensure the revolver functions safely. Improper installation can result in a dangerous malfunction. This part requires complete disassembly of the revolver's action and precise fitting to ensure correct timing and engagement. Only a qualified gunsmith should install this component.

Specifications:

• Part Number: 29120A
• Model: 29
• Frame Size: N Frame (Large Frame)
• Caliber: .44 Magnum
• Part Type: Hammer Block (Safety Component)
• Condition: Used
• Manufacturer: Smith & Wesson

About the Hammer Block Safety:

The hammer block is a key component of Smith & Wesson's transfer bar safety system. When the trigger is at rest, the hammer block physically prevents the hammer from moving forward far enough to strike the firing pin, even if the hammer is accidentally released or the revolver is dropped. Only when the trigger is pulled fully to the rear does the hammer block drop out of the way, allowing the hammer to strike the firing pin and discharge the cartridge. This design provides an essential layer of safety for modern revolvers.

About the Model 29:

The Smith & Wesson Model 29, introduced in 1955, is one of the most iconic revolvers ever produced. Built on the robust N Frame platform to handle the powerful .44 Magnum cartridge, it gained worldwide fame through Clint Eastwood's "Dirty Harry" films. Every component, including critical safety parts like the hammer block, works together to deliver reliable and safe performance.