Polymer80 PF45 80% Full Size Frame and Jig Kit (Glock 20/21 Compatible)

Overview

The Polymer80 PF45 80% Full Size Frame and Jig Kit (Glock 20/21 Compatible) provides an advanced platform for builders seeking a .45 ACP or 10mm Auto pistol. This kit includes the unfinished 80% frame and the necessary jig, allowing you to complete a full-size handgun frame at home. Designed specifically for Glock 20 and Glock 21 parts compatibility, the PF45 frame gives you the foundation for a custom build without requiring a serialized receiver transfer. Every kit is manufactured to Polymer80’s tolerances, ensuring reliable fitment with OEM and aftermarket components.

Features and Specs

The Polymer80 PF45 80% Full Size Frame and Jig Kit (Glock 20/21 Compatible) is constructed from high-strength, impact-resistant polymer. The frame features an integral trigger guard, Picatinny accessory rail, and textured grip panels for enhanced control. The included jig is precision-machined from hardened steel and aligns with the frame’s pre-cut indexing points for accurate drilling. This kit is compatible with Glock 20 and Glock 21 slide assemblies, barrels, recoil springs, and lower parts kits.

• Full-size 80% frame compatible with Glock 20 (10mm) and Glock 21 (.45 ACP) components
• Undrilled trigger housing pin holes, trigger pin holes, and locking block pin holes require final machining
• Includes jig with drill bit alignment guides, end mill support, and pre-installed locating pins

The frame’s internal geometry matches OEM Gen3-style trigger housings, locking blocks, and slide stop levers. The kit does not include a slide, barrel, or lower parts kit. All necessary hardware for the jig is included. The frame is shipped without a serial number and requires finishing by the end user.

• Textured front and back straps with integrated thumb grooves for ergonomic grip
• Integrated 1913 Picatinny rail for mounting lights or lasers
• Oversized magazine well for faster reloads with standard and extended magazines

Who It Is For

The Polymer80 PF45 80% Full Size Frame and Jig Kit (Glock 20/21 Compatible) is intended for individuals who possess the technical skills and tools to complete an 80% frame. This includes experienced firearm builders, hobbyists seeking a custom .45 ACP or 10mm pistol, and those who prefer to construct their firearm without purchasing a completed, serialized frame. You will need a drill press or hand drill, a 4mm end mill or equivalent tooling, and basic mechanical aptitude. This kit is not suitable for first-time builders without prior experience with polymer frame finishing.

• Builders familiar with Glock platform disassembly and reassembly
• Individuals who prefer a full-size grip for competition, hunting, or range use
• Those who want to create a custom firearm without dealer transfer delays

Shipping and FFL

This Polymer80 PF45 80% Full Size Frame and Jig Kit (Glock 20/21 Compatible) is classified as a non-firearm frame blank and does not require transfer through a Federal Firearms License (FFL) dealer. It is shipped directly to your residential or business address with standard shipping options available. However, you must comply with all applicable federal, state, and local laws regarding the manufacture and possession of firearms. Some states and localities restrict or prohibit the purchase or possession of 80% frames. By purchasing this item, you confirm that you are legally eligible to own a firearm and that you will complete the frame in compliance with all laws. We do not assume responsibility for any legal consequences resulting from local restrictions. Verify your jurisdiction’s laws before ordering. All sales are final on 80% frames and jig kits.