Polymer80 Rhino AR-15 80% Lower Receiver Jig Kit – Complete Milling Guide for DIY Builds

Polymer80 Rhino AR-15 80% Lower Receiver Jig Kit

Transform your AR-15 build project with the Polymer80 Rhino 80% Lower Receiver Jig Kit – the ultimate solution for DIY firearm enthusiasts seeking professional-grade results. This comprehensive jig system provides everything you need to safely and accurately machine your 80% lower receiver into a fully functional firearm component. Engineered with precision and durability in mind, the Rhino jig ensures consistent results whether you’re a first-time builder or experienced gunsmith.

Why Choose the Polymer80 Rhino Jig?

Building your own AR-15 from an 80% lower receiver offers unparalleled customization and satisfaction, but requires precise machining to ensure safety and reliability. The Polymer80 Rhino jig eliminates guesswork with its innovative design featuring hardened steel drill bushings, CNC-machined aluminum templates, and comprehensive instructions. Unlike generic jigs that can lead to misaligned holes or uneven milling, the Rhino system guarantees proper fire control group pocket dimensions and pin hole alignment critical for safe operation.

Complete Kit Includes Everything You Need

• Hardened steel drill guide plates for precise hole alignment
• CNC-machined aluminum milling templates
• All necessary hardware and fasteners
• Step-by-step illustrated instructions
• Compatible with standard drill presses and milling machines
• Designed specifically for Polymer80 AR-15 80% lower receivers

Technical Specifications & Features

The Polymer80 Rhino jig incorporates several advanced features that set it apart from competing products. The hardened steel drill bushings maintain dimensional stability through multiple uses, while the aluminum templates provide rigid support during milling operations. The system is designed to work with both polymer and aluminum 80% lower receivers, though it’s optimized for Polymer80’s proprietary materials. Proper use requires basic workshop tools including a drill press, end mills, and appropriate cutting fluids.

Building Your AR-15 Lower Receiver

Using the Rhino jig follows a logical progression: secure the 80% lower in the jig using the included hardware, drill the trigger and hammer pin holes using the guide plates, then mill the fire control group pocket using the provided templates. The system includes depth stops and alignment pins to prevent over-milling or misalignment. Always follow all local, state, and federal regulations regarding firearm manufacturing, and ensure you have the proper skills and equipment before beginning your project.

Why Buy From Texas Gun Store?

At Texas Gun Store, we combine firearms expertise with exceptional customer service. Our team includes experienced builders who have personally used the products we sell, ensuring we can provide genuine advice and support. We maintain strict quality control on all inventory and offer competitive pricing without compromising on service. As a trusted firearms retailer, we prioritize compliance, safety, and customer satisfaction in every transaction.

Frequently Asked Questions

Q: What tools do I need to use this jig?
A: You’ll need a drill press, appropriate drill bits, end mills (typically 3/8″ and 1/4″), and basic workshop tools. A milling machine provides best results but isn’t strictly necessary.

Q: Is this jig reusable?
A: Yes, the hardened steel components allow for multiple uses, though the aluminum templates may show wear after extensive use.

Q: Does this work with aluminum 80% lowers?
A: While designed for Polymer80 polymer lowers, it can work with aluminum receivers with proper tooling adjustments.

Q: Are instructions included?
A: Yes, comprehensive step-by-step instructions with illustrations are provided.

For all your firearm building needs, visit our Texas Gun Store for quality components and expert advice.