Broken Armory Tooling for 80% Jig | Polymer80
About this product
Broken Armory Tooling for 80% Jig: Essential Replacement Parts for Precision Machining
Ensure flawless results in your AR-15 and AR-9 builds with this high-quality replacement tooling kit for the Broken Arms 80% Jig. Designed for durability and precision, this kit includes all necessary drill bits and end mill bits to maintain optimal performance when your original tools wear out.
Why Replace Your Tooling?
Over time, drill bits and end mill bits can degrade, leading to misaligned pinholes, rough fire control cavities, and compromised build quality. Using worn tools increases the risk of errors in your 80% lower receiver projects. This replacement kit ensures you can continue machining with confidence, preserving the reusable plates and templates of your jig for multiple builds.
Key Features and Technical Specifications
- Compatibility: Specifically designed for the Broken Arms 80% AR-15/AR-9 Jig, making it ideal for a wide range of Polymer80 and other AR-platform builds.
- Contents: Includes precision-ground drill bits and end mill bits crafted from high-speed steel for longevity and sharp cuts.
- Durability: Made to withstand repeated use, reducing the frequency of replacements and ensuring consistent results.
- Ease of Use: Simply swap out worn bits to restore your jig’s performance without needing specialized tools.
Boost Your Builds with Expert-Backed Quality
As experts in the firearms and machining community, we recommend regular tool inspection and replacement to avoid common pitfalls. This kit not only enhances safety and accuracy but also supports the DIY ethos of building custom firearms at home. Trust in Polymer80 for reliable components that meet high standards.

Order your replacement tooling today and keep your projects on track with precision-engineered parts from a trusted source in the industry.
What's in the box
- Broken Armory Tooling for 80% Jig | Polymer80