Main Spring Caps 1911 / 2011

The main spring cap is a small yet critical component inside your 1911 or 2011's mainspring housing. It seats the mainspring and captures the hammer strut, enabling the mainspring to efficiently power the hammer. Though often overlooked, a quality cap is essential for consistent mainspring tension, reliable ignition, and the longevity of your pistol's fire control system.

The Unsung Anchor of Your Main Spring

A precision-made main spring cap ensures consistent performance:

  • Secure Spring Seating: Provides a stable, centered seat for the mainspring, preventing kinking or binding.

  • Efficient Force Transfer: Smoothly transfers mainspring energy through the hammer strut to the hammer, ensuring consistent firing pin strikes.

  • Prevents Component Wear: Minimizes friction and wear among the mainspring, hammer strut, and housing.

  • Reliability Foundation: Contributes to overall ignition reliability by ensuring efficient mainspring operation.

Shooters Connection offers high-quality main spring caps for both 1911 and 2011 platforms, manufactured to precise tolerances for reliable operation.

Choosing Your Main Spring Cap

When selecting a main spring cap, focus on material quality and dimensional consistency:

  • Material: Look for durable hardened or stainless steel.

  • Finish: A smooth, polished finish reduces friction and eases assembly.

  • Dimensional Accuracy: Ensure proper fit with your mainspring and housing.

Main spring caps are typically "drop-in" parts, requiring no fitting. Replace if signs of bending, cracking, or excessive wear appear, or if the mainspring binds. While rare, a damaged cap can cause inconsistent hammer fall or light primer strikes. Generally, main spring caps are standardized across most 1911 and 2011 models.