Polymer80 G20/G21 SF Large (XL) 80% Lower Jig Kit – P80-JIG-XL – Complete Frame Milling Tool

Polymer80 G20/G21 SF Large (XL) 80% Lower Jig Kit – Complete Milling Solution

Transform your Polymer80 G20 or G21 SF Large (XL) 80% lower receiver into a fully functional firearm frame with this professional-grade jig kit. Designed specifically for the popular PF45 platform, this comprehensive toolset provides everything you need to complete your build with precision and confidence.

Why Choose This Polymer80 Jig Kit?

As experienced firearms enthusiasts at Texas Gun Store, we understand the importance of quality tools for custom builds. This Polymer80 jig kit stands out for its:

• Perfect Compatibility: Engineered specifically for Polymer80 G20/G21 SF Large (XL) frames (PF45 platform)
• Complete Toolset: Includes all necessary jigs, guides, and hardware for the entire milling process
• Precision Engineering: CNC-machined components ensure accurate alignment and clean cuts
• Durable Construction: Built to withstand repeated use while maintaining dimensional stability
• Legal Compliance: Enables you to complete your 80% lower receiver in accordance with ATF regulations

What’s Included in Your Kit

This comprehensive package contains all essential components for completing your Polymer80 frame:

• Main jig body with precise alignment features
• Drill guide plates for accurate hole placement
• All necessary hardware and fasteners
• Detailed instructions for proper setup and use
• Compatible with standard workshop tools (drill press or router recommended)

Technical Specifications & Features

The P80-JIG-XL is engineered to exacting standards to ensure professional results:

• Specifically designed for Polymer80 PF45 (G20/G21 SF Large/XL) frames
• Precision alignment pins for perfect registration
• Reinforced construction for stability during milling operations
• Clear marking indicators for proper tool positioning
• Compatible with both drill press and router finishing methods

Application & Use Cases

This jig kit is ideal for:

• Custom Glock 20/21 builds using Polymer80 frames
• DIY firearm enthusiasts wanting to complete their own receivers
• Gunsmiths and builders creating custom 10mm or .45 ACP pistols
• Those seeking to understand firearm mechanics through hands-on building
• Creating personalized firearms with unique features and finishes

Why Buy From Texas Gun Store?

Q: Why should I purchase from Texas Gun Store?
A: We combine decades of firearms expertise with exceptional customer service. Our team tests and verifies every product we sell, ensuring you receive quality gear that performs as advertised. We’re committed to educating our customers and providing reliable support throughout your building journey.

Q: What makes your store different?
A: As actual firearms enthusiasts and builders, we provide genuine experience-based advice. We don’t just sell products – we understand how they work and can help you achieve the best results with your projects.

Important Legal Information

This jig is intended for use in completing 80% lower receivers into functional firearm frames. Users must comply with all federal, state, and local laws regarding firearm manufacturing and ownership. It is the purchaser’s responsibility to ensure compliance with all applicable regulations. This product is for legal use only by individuals who are not prohibited from possessing firearms.

Getting Started with Your Build

To begin your Polymer80 G20/G21 build, you’ll need:

• Polymer80 PF45 80% lower receiver
• This complete jig kit (P80-JIG-XL)
• Appropriate tools (drill press or router recommended)
• Safety equipment (eye protection, proper ventilation)
• Patience and attention to detail

Our team at Texas Gun Store is always available to answer questions about your build process. Whether you’re a first-time builder or experienced gunsmith, we’re here to support your project from start to finish.

Note: Some basic workshop experience is recommended for optimal results. Always follow manufacturer instructions and safety guidelines when working with tools.