Smith & Wesson Model 39 Hammer & Stirrup Assembly
OEM Part #3919 | Genuine Factory Component
Quality Used - Inspected & Tested
Why Choose This OEM Hammer Assembly?
- Authentic Smith & Wesson Factory Part - Not an aftermarket substitute. Guaranteed genuine OEM component manufactured to S&W's exact specifications
- Quality Inspected - Each hammer and stirrup assembly is carefully examined for wear, damage, and proper function before listing
- Precision Engineered - Factory tolerances ensure proper fit, timing, and reliable ignition in your Model 39
- Blue Steel Finish - Traditional factory finish matches original specifications
- Complete Assembly - Includes both hammer and stirrup components as a matched set
Compatibility & Fitment
✓ Confirmed Compatible Models:
| Model Series | Specific Variants | Caliber |
|---|---|---|
| Model 39 | 39, 39-2 | 9mm |
Important: This part is specifically designed for Model 39 series pistols. Not compatible with other S&W models. Verify your model number before ordering.
Technical Specifications
- Manufacturer: Smith & Wesson
- Part Number: 3919
- Condition: Used - Functionally Tested
- Finish: Blue Steel
- Components: Hammer & Stirrup Assembly (Complete)
- Function: Critical firing mechanism component
- Material: Heat-treated steel
What Sets This Part Apart
🔍 Genuine OEM Quality
Factory Smith & Wesson part, not a reproduction. Ensures exact fit and proper timing for safe, reliable operation.
✅ Pre-Inspected
Every part is visually and functionally inspected. We only sell components that meet our quality standards.
💰 Value Pricing
Quality used OEM parts at a fraction of new retail cost. Perfect for restoration projects and repairs.
📦 Fast Shipping
In-stock parts ship quickly from our US facility. Get your Model 39 back in action faster.
Perfect For:
- Gunsmiths - Reliable OEM replacement parts for customer repairs
- Collectors - Authentic factory components for restoration projects
- Model 39 Owners - Direct replacement for worn or damaged hammer assemblies
- Armorers - Quality spare parts for maintaining vintage S&W pistols
Installation & Safety Information
⚠️ Professional Installation Recommended
The hammer and stirrup assembly is a critical safety component that directly affects your firearm's firing mechanism. Improper installation can result in:
- Failure to fire or unreliable ignition
- Incorrect hammer timing
- Potential safety hazards
We strongly recommend professional gunsmith installation to ensure proper fit, timing, and safe operation. Installation requires specialized tools and knowledge of S&W internal mechanisms.
About "Used" Condition
Our used parts are carefully sourced from decommissioned firearms and thoroughly inspected. Each component is evaluated for:
- Structural integrity (no cracks, breaks, or excessive wear)
- Proper dimensions and tolerances
- Functional surfaces (engagement points, pivot holes)
- Overall condition suitable for reliable service
While these parts show normal signs of previous use, they are fully functional and ready for installation.
Why Buy From USA Guns and Gear?
- Specialization: We focus exclusively on authentic Smith & Wesson OEM parts
- Quality Standards: Every part is inspected before listing
- Expert Knowledge: Deep understanding of S&W pistol and revolver platforms
- Customer Support: Knowledgeable team to help with compatibility questions
- Fast Fulfillment: Quick shipping from our US warehouse
Frequently Asked Questions
Q: Is this a genuine Smith & Wesson factory part?
A: Yes, this is an authentic OEM part manufactured by Smith & Wesson, not an aftermarket reproduction.
Q: Will this fit my Model 39?
A: This part is designed specifically for Model 39 and 39-2 pistols in 9mm. Please verify your exact model before ordering.
Q: What does "used" condition mean?
A: Used parts have been removed from decommissioned firearms and show normal wear from previous use, but are fully functional and inspected for quality.
Q: Can I install this myself?
A: While mechanically inclined individuals may be able to install this part, we strongly recommend professional gunsmith installation due to the critical nature of the firing mechanism.
Q: Do you offer returns?
A: Please review our return policy. Contact us before ordering if you have specific compatibility concerns.
Limited Availability: Vintage S&W parts are increasingly difficult to source. Order now while in stock.
🔒 Secure Checkout | 📦 Fast US Shipping | ✉️ Expert Support