Elite Builder 80% Lower Jig (AR-15/AR-9) | Polymer80

About this product

Elite Builder 80% Lower Jig: Precision Tool for AR-15 and AR-9 Builds

The Elite Builder is back and better than ever. This proven 80% jig is engineered to help you complete your custom receiver with ease and accuracy. Compatible with both forged and billet AR-15 80% lowers and AR9 80% lowers, it includes all necessary tooling and easy-to-follow guides for drilling and milling. Simply pair it with a vise and drill press, and you’re ready to build.

Included High-Speed Steel Tool Kit

To ensure efficient machining of aluminum firearm receivers, the Elite Builder jig comes with a complete set of HSS bits:

• 1 x ⅜” Drill Bit (5” length)
• 1 x 5/32″ Drill Bit (3” length)
• 1 x ⅜” Short End Mill (3” length)
• 1 x 5/16″ Short End Mill (4” length)
• 1 x ⅜” Long End Mill (4” length)

Key Features and Specifications

• Self-aligning design for hassle-free setup without special fitting
• Compatible with any standard AR-15 or AR-9 80% lower receiver
• Durable black anodized finish for rust and corrosion resistance
• Pre-drilled holes for hammer, trigger, and safety pin placements
• Reinforced steel template plates for multiple lower completions

Expert-Backed and User-Friendly

Trusted by gunsmiths and DIY enthusiasts, this jig simplifies the process of building your own firearm, ensuring compliance and safety. Follow the detailed instructions available online for best results.

IMPORTANT: Designed for use with a drill press only; not compatible with routers.