Smith & Wesson Model 39 Pistol Main Spring & Bushing 9mm Blue Steel Used OEM Part 3934

This is a used OEM main spring and bushing assembly for the Smith & Wesson Model 39 semi-automatic pistol chambered in 9mm. This is a genuine factory part in blue steel finish from a first-generation Smith & Wesson pistol.

Key Features:

• Genuine Smith & Wesson factory part
• Blue steel finish
• Includes both main spring and bushing
• Compatible with Model 39 9mm pistols
• Used condition - fully functional OEM component
• Part Number: 3934

Compatibility:
This main spring and bushing assembly is designed specifically for the Smith & Wesson Model 39, the first double-action 9mm pistol produced by S&W starting in the 1950s. The main spring (also called recoil spring or hammer spring) provides the tension necessary for proper hammer function and cycling. The bushing guides the spring and ensures proper alignment within the frame.

About the Model 39:
The Smith & Wesson Model 39 was introduced in 1954 and became one of the most iconic American 9mm pistols. It features a DA/SA (double-action/single-action) trigger system, alloy frame for reduced weight, and single-stack 8-round magazine. It was adopted by various military and law enforcement agencies. Parts for these classic first-generation pistols are increasingly difficult to find.

Condition:
This is a used factory part removed from a Smith & Wesson Model 39 pistol. Both the main spring and bushing have been inspected and are in good working condition with normal wear consistent with use. The blue finish shows typical handling marks. Used parts offer an economical solution for repairs and restorations while maintaining OEM quality and fit.

Installation:
Professional gunsmith installation is recommended for proper fitting and function. The main spring is under tension and requires proper tools and knowledge for safe installation. Improper installation can affect safety and reliability. Knowledge of Smith & Wesson semi-automatic pistol mechanisms is required.