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Description

Colt 1911 Serrated Round Mainspring Housing

Upgrade or restore your Colt 1911 with this Type 4, 2nd Variation Serrated Round Mainspring Housing. Designed to Colt factory specifications, this mainspring housing features a rounded profile with vertical serrations for improved grip and control. As a 2nd variation of the Type 4 design, it retains the classic serrated texture but does not include a lanyard loop, making it an excellent choice for collectors and shooters who prefer a streamlined look.

Ideal for restorations, replacements, or custom builds, this factory-style Colt 1911 mainspring housing fits Government and Commander models chambered in .45 ACP and other standard calibers. The serrated surface enhances grip stability, while the rounded contour provides a comfortable hold, staying true to later production refinements. Whether you’re maintaining a vintage Colt 1911 or fine-tuning a modern classic, this part ensures authentic aesthetics and reliable function.

*AD IS FOR ONE PART*

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SPECIFICATIONS

• MAKE: Colt
• MODEL: 1911
• FINISH: Blue
• Type 4, 2nd Variation
• Used

Additional Information

The Type 4, 2nd Variation mainspring housing represents Colt’s continued refinements in 1911 design, moving toward a more ergonomic profile while omitting the lanyard loop seen in earlier styles. This change was aimed at improving the pistol’s handling and comfort in both military and civilian applications. It is a direct replacement for full-size Colt 1911 models, maintaining the firearm’s historical accuracy and performance.

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