Blued steel mainspring housing with vertical serrations for Government and Commander-size 1911 pistols. Fits standard .45 ACP models; fitting may be required.
This blued steel mainspring housing is a direct replacement component for Government and Commander-size 1911 pistols chambered in .45 ACP.
This is a housing component only and does not include internal mainspring parts. Fitting may be required during installation, depending on your specific 1911 platform. We recommend having a qualified gunsmith perform installation to ensure proper function and safety.
Whether you're building a custom 1911 or replacing a worn component, this mainspring housing delivers the reliability and fit that serious shooters expect.