11911 Firing Pin Spring

The Sig Sauer 1911 Firing Pin Spring (SPRING-12) is a genuine factory replacement part designed to maintain the peak performance and safety of your firearm. It provides the necessary tension to return the firing pin to its rest position after every strike, preventing primer drag and ensuring reliable ignition. 

Performance and Safety

• Critical Function: According to Sig Sauer, this spring is essential for ensuring consistent primer strikes and acts as a key safety component by preventing accidental discharges if the pistol is dropped.
• Factory Standards: This is an original manufacturer part, produced to the same high standards and rigorous specifications as the components originally installed in your firearm.
• Reliability: Replacing worn springs every 5,000 rounds is a recommended maintenance practice by experts at Wilson Combat to avoid fatigue and ensure the energy delivered to the firing pin remains consistent. 

Specifications and Compatibility

• Model Fit: Specifically engineered for the Sig Sauer 1911 series.
• Caliber Support: Compatible with 1911 models chambered in .45 ACP, 9mm, .40 S&W, 10mm, and .38 Super.
• Material: Durable steel construction with an unfinished surface.
• Manufacturer Part Number: 1911550 (SPRING-12). 
  

Installation Note

Sig Sauer and major retailers like Midwest Gun Works recommend that this part be installed by a qualified and trained gunsmith to ensure proper function and safety.