Smith & Wesson Firing Pin Safety Lever - 3904 3906 5906 4003 4006 Multi-Model - 100290000

Smith & Wesson Firing Pin Safety Lever — Part# 100290000

Genuine Smith & Wesson factory new OEM firing pin safety lever for multiple Second and Third Generation semi-automatic pistols. This precision-manufactured lever blocks the firing pin from moving forward unless the trigger is fully pressed, preventing accidental discharge if the pistol is dropped or struck.

Specifications

• Part Number: 100290000
• Condition: Factory New
• Manufacturer: Smith & Wesson

Compatible Models

9mm Models:

• Model 3904, 3906, 3913, 3914, 3944, 3946, 3953, 3954
• Model 439, 539, 639
• Model 459, 559, 659
• Model 5903TSW, 5906TSW, 5943TSW

.40 S&W Models:

• Model 410, 411
• Model 4003, 4004
• Model 4003TSW, 4006TSW, 4013TSW

Installation Notes

Professional gunsmith installation is required for proper fitting and function testing. Factory replacement parts are manufactured to the exact same specifications, tolerances, and materials as the original.

Questions? Call or email us — we're happy to confirm fitment before you order.