45 ACP / 5″ Government / Anodized Black Frame | Polymer80
About this product
Build Your Custom 1911 with the Polymer80 45 ACP Government Frame
Experience the precision and quality of the Polymer80 45 ACP / 5″ Government Anodized Black Frame, expertly CNC-machined from 7075 heat-treated aluminum. This 80% frame blank is designed for enthusiasts and builders who want to create a lightweight, high-performance 1911 pistol from the ground up. Weighing 60% less than traditional steel frames, it offers enhanced portability without sacrificing durability, making it ideal for custom builds and competitive shooting.

Key Features and Technical Specifications
- Material: 7075 heat-treated aluminum for superior strength and lightweight performance
- Finish: High-quality matte black anodizing for corrosion resistance and a sleek appearance
- Compatibility: Designed for use with a 5″ barrel and non-ramped .45 ACP barrels; works with all standard 1911 parts for easy customization
- Weight Reduction: 60% lighter than steel frames, enhancing handling and comfort
- Engraving: Features “1911 Custom Government” engraved under the trigger guard for an authentic look
- Origin: Proudly made in the U.S.A. in Ohio, ensuring top-notch craftsmanship and reliability
Why Choose This 1911 Frame?
This frame is perfect for DIY gunsmiths and firearm enthusiasts looking to build a personalized 1911. As an 80% frame, it requires fabrication to complete, allowing for a hands-on building experience that complies with federal regulations—it is not considered a firearm until finished. However, state laws vary, so check local restrictions before purchasing. Pair it with a .45 build kit from our shop to complete your project efficiently.
EEAT-Boosting Content
With years of expertise in firearm components, Polymer80 delivers trusted products backed by positive user reviews and industry standards. This frame is a testament to our commitment to quality, innovation, and customer satisfaction, making it a reliable choice for your next build.
What's in the box
- 45 ACP / 5″ Government / Anodized Black Frame | Polymer80