Smith & Wesson J Frame Hammer Block .22 LR - Stainless Steel Used J63120

Genuine Smith & Wesson J Frame Hammer Block for Model 63

Factory OEM hammer block (also known as a safety block or firing pin block) designed for Smith & Wesson Model 63 .22 LR revolvers. This critical safety component prevents the hammer from contacting the firing pin unless the trigger is fully pulled, providing drop-safe protection.

Part Details:

• Part Number: J63120
• Condition: Used, excellent working condition
• Material: Stainless steel
• Frame Size: J Frame
• Function: Safety/firing pin block
• Essential for safe revolver operation

Compatibility:

Fits Smith & Wesson Model 63 and other J Frame revolvers. Hammer blocks typically interchange within J Frame models regardless of caliber, making this suitable for various J Frame configurations including Models 34, 35, 36, 37, 38, 40, 42, 43, 49, 60, 63, 317, 331, 337, 340, 342, 351, 360, 442, 638, 640, 642, and 649.

Installation:

Professional gunsmith installation required. Proper fitting and function testing essential to ensure the safety mechanism operates correctly. This part must move freely and engage properly to prevent accidental discharge. Factory parts are manufactured to exact OEM specifications and tolerances.

How to Identify Your Model:

Swing out the cylinder and check behind the yoke on the frame for the model number. Model numbers began in 1957-58. If no model number is present, contact us with your serial number for assistance.

Authentic Smith & Wesson factory safety component for reliable restoration and repair of J Frame revolvers.