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

Overview

This is the Polymer80 PF45 80% Full Size Frame and Jig Kit, designed for builders who want to complete a large-frame pistol compatible with Glock 20 and Glock 21 components. As a serial-number-ready 80% frame, this kit gives you the structural foundation for a .45 ACP or 10mm build without requiring a completed firearm transfer at the point of purchase. The kit includes the jig, frame, and all necessary drill bits and end mills to finish the frame at home. For shooters who demand a full-size grip and a robust platform, the polymer80 pf45 80% full size frame and jig kit (glock 20/21 compatible) delivers the same ergonomic benefits as factory frames while allowing you to control the final assembly process.

Features & Specs

The polymer80 pf45 80% full size frame and jig kit (glock 20/21 compatible) is manufactured by Polymer80 and falls under the frames category. It is built to accept standard Glock 20/21 lower parts and magazines, offering a textured grip surface and an integrated trigger guard undercut for improved control. The jig ensures precise alignment for the three pin holes and rail channel that must be completed by the builder.

• Accepts standard Glock 20/21 magazines, trigger groups, and slide assemblies
• Includes complete jig system with pre-marked drilling guides and tooling
• Grip frame compatible with both .45 ACP (Glock 21) and 10mm (Glock 20) calibers

• Made from reinforced polymer with steel rail inserts for durability
• Integrated Picatinny accessory rail on the dust cover
• Ambidextrous thumb notch for high-handed grip placement

Who It Is For

This kit is intended for experienced firearm builders who understand the legal and mechanical requirements of completing an 80% frame. It is suitable for hobbyists who want to assemble a large-frame pistol from the ground up, or for shooters seeking a custom trigger, grip, and slide combination that is not available from a factory Glock. The polymer80 pf45 80% full size frame and jig kit (glock 20/21 compatible) is also appropriate for those who prefer a polymer frame over aluminum or steel options, as it provides the same weight savings and recoil management as standard production frames. Note that this product is not for beginners who have never completed an 80% build, as the drilling and machining steps require mechanical confidence and proper tool use.

• Experienced home gunsmiths building a large-frame pistol
• Shooters who want a dedicated 10mm or .45 ACP platform
• Those seeking an 80% frame with a full-size grip and dust cover

Shipping & FFL

Because the polymer80 pf45 80% full size frame and jig kit (glock 20/21 compatible) is classified as an unfinished, non-serialized frame, it can be shipped directly to your residential or business address without requiring transfer through a Federal Firearms License (FFL) dealer. However, once you complete the frame by drilling the fire control pocket and installing the lower parts, it becomes a firearm under federal law. You are responsible for ensuring that your finished build complies with all local, state, and federal laws. We do not accept returns on completed or modified frames. Check your state and local regulations before purchasing, as some jurisdictions restrict or prohibit 80% frames altogether. By ordering this kit, you confirm that you are legally eligible to possess and complete an unfinished frame under applicable law.