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) is a precision-engineered component platform designed for builders who require a full-size .45 ACP or 10mm Auto frame. This kit includes the unfinished frame, a dedicated drill jig, and all necessary hardware to complete the lower receiver. The polymer80 pf45 80% full size frame and jig kit (glock 20/21 compatible) is constructed from a proprietary glass-reinforced polymer blend that meets OEM dimensional standards while offering the structural integrity expected of a duty-grade frame. Each kit is CNC-machined to within 0.005 inch tolerances, ensuring proper alignment with Gen3 Glock 20 and Glock 21 slide assemblies and internal components. The frame accepts standard Glock 20/21 magazines, slide stop levers, trigger housings, and locking blocks without modification.

Features and Specs

The polymer80 pf45 80% full size frame and jig kit (glock 20/21 compatible) provides the builder with a fully serializable platform that requires drilling of three pin holes, removal of the trigger housing pocket material, and completion of the front rail channel. Key specifications include:

• Frame material: Glass-reinforced Nylon 66 polymer with textured front and rear grip serrations
• Compatibility: Gen3 Glock 20 (10mm Auto) and Glock 21 (.45 ACP) slides, barrels, and lower parts kits
• Includes: PF45 80% frame, modular jig block with hardened steel drill bushings, four drill bits, end mill bit, and stainless steel pin set
• Rail system: 17-4 PH stainless steel front and rear rail inserts with black nitride finish
• Weight: 8.2 ounces (frame only); 14.6 ounces (complete kit with jig and hardware)
• Grip angle: 108 degrees with integrated trigger guard undercut and beavertail
• Magazine catch: Ambidextrous compatible with standard Glock 20/21 magazine release

The jig system features indexed alignment guides that correspond to the frame’s molded-in pocket geometry. Each drill bushing is calibrated for 0.136 inch pin holes, and the included two-flute end mill cuts the trigger housing pocket to a depth of 0.312 inch. The polymer80 pf45 80% full size frame and jig kit (glock 20/21 compatible) requires approximately 45 to 90 minutes of shop time for completion using basic hand tools and a drill press.

Who It Is For

This kit is intended for experienced firearm builders, gunsmiths, and enthusiasts who are legally permitted to manufacture a firearm for personal use under U.S. federal law. The polymer80 pf45 80% full size frame and jig kit (glock 20/21 compatible) is suited for those who need a full-size frame platform for hunting, target shooting, or personal defense builds. It is not recommended for first-time 80% builders due to the dimensional complexity of the PF45 frame compared to compact or subcompact frames. Individuals must be 21 years of age or older and not prohibited from possessing firearms under 18 U.S.C. Section 922(g). This kit is not a finished firearm and does not include a slide, barrel, lower parts kit, or magazine.

• Designed for builders who can accurately drill three pin holes and machine one polymer pocket
• Requires access to a drill press with a 3/8 inch chuck and a vise with padded jaws
• Not compatible with Gen4 or Gen5 Glock components without aftermarket adapters

Shipping and FFL

This product ships directly to your residence or business address. No Federal Firearms License (FFL) transfer is required for this item because the frame is not a completed firearm under the Gun Control Act of 1968. The polymer80 pf45 80% full size frame and jig kit (glock 20/21 compatible) is classified as an unfinished receiver blank and is not subject to NICS background check requirements at the time of purchase. However, the individual completing the frame is responsible for ensuring compliance with all applicable state, local, and federal laws regarding the manufacture and possession of firearms. Some states and municipalities restrict or prohibit the possession of unfinished frames. It is the buyer’s sole responsibility to verify that ownership and completion of this kit is lawful in their jurisdiction. By purchasing this item, you certify that you are legally eligible to possess a firearm and that you will complete the frame only for personal use, not for sale or transfer.

• Ships via UPS Ground or FedEx Home Delivery with adult signature required
• Estimated delivery: 5-7 business days within the contiguous United States
• No international shipping; no shipping to P.O. boxes or APO/FPO addresses