Precision-Machined STI Mainspring Housing with 25 LPI Checkering

Upgrade your STI 1911 pistol with the Evolution Gun Works (EGW) STI Mainspring Housing 25 LPI Blue, designed to enhance both performance and aesthetics. Crafted from solid bar stock steel, this mainspring housing undergoes meticulous sandblasting and hot bluing, resulting in a durable and visually appealing finish.

Key Features:

• Precision Checkering: Features 25 lines per inch (LPI) checkering, providing improved grip and control during shooting.
• Enhanced Weight Distribution: Designed to position weight effectively, contributing to better balance and stability of your firearm. 
• Durable Construction: Fully machined from solid bar stock steel, ensuring longevity and resilience under rigorous use. 
• Sleek Finish: Sandblasted and hot blued for a smooth, corrosion-resistant surface that complements your firearm's appearance. 
• Compatibility: This mainspring housing is specifically designed for STI 1911 models, offering a seamless fit for both full-size and Commander-style frames.

Installation Note:

Please be aware that pins and springs are not included with this part. You can reuse the pins and springs from your original mainspring housing or purchase new components separately.

Why Choose EGW's Mainspring Housing?

Replacing a plastic mainspring housing with this high-quality steel component not only enhances the durability of your firearm but also improves grip traction and overall handling. EGW's commitment to precision engineering ensures that each part meets stringent quality standards, providing you with a reliable upgrade for your STI 1911 pistol.

Note: This part DOES NOT fit a Tisas B9R

Warning: This product may be alloyed with trace amounts of lead and other elements which are known to the State of California to cause reproductive harm and cancer. To prevent exposure, do not alter the product by welding, grinding, etc. For more information, go to www.P65Warnings.ca.gov.