Description

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

Overview

This listing is for the Polymer80 PF45 80% Full Size Frame and Jig Kit, specifically engineered for compatibility with Glock 20 and Glock 21 full-size pistol configurations. As a manufacturer-defined 80% frame component, this kit requires final machining and assembly by the end user. The kit includes the PF45 polymer frame in a raw, uncompleted state, along with the necessary jig, drill bits, and instructions to complete the frame to functional specifications. Designed for .45 ACP and 10mm Auto builds, this is the largest platform offered in the Polymer80 series and is intended for builders who require a full-size grip and slide length. The polymer80 pf45 80% full size frame and jig kit (glock 20/21 compatible) is sold as a non-serialized component that must be machined and finished in compliance with all applicable federal, state, and local laws.

Features & Specs

The PF45 kit is manufactured from high-impact, glass-reinforced polymer that meets OEM dimensional tolerances for Glock 20 and Glock 21 parts. The frame geometry is based on the full-size Gen3-style platform, with a 1913 Picatinny accessory rail integrated into the dust cover. The kit includes a precision-machined aluminum jig that indexes off the frame’s internal pockets, ensuring correct hole placement for the trigger housing, locking block, and slide stop. All necessary drill bits for the three required holes are included. The frame surface is a matte black textured finish with aggressive front and rear serrations, and the grip features a reduced trigger reach compared to the factory Glock 20/21 frame. The polymer80 pf45 80% full size frame and jig kit (glock 20/21 compatible) supports standard Glock 20/21 magazines, slide assemblies, and lower parts kits.

• Frame material: Glass-reinforced polymer, matte black finish. Integrated 1913 Picatinny rail. Full-size grip length for 10mm Auto and .45 ACP magazines.
• Jig: Aluminum, reusable, indexed for PF45-specific hole geometry. Includes three drill bits (2.5mm, 3mm, 4mm). Compatible with a standard drill press or hand drill.
• Compatibility: Accepts Glock 20/21 Gen3 slide assemblies, barrels, recoil spring assemblies, and lower parts kits. Does not accept Gen4 or Gen5 parts without modification.

Who It’s For

This kit is intended for experienced firearm builders who possess the tools and knowledge required to complete an 80% frame. The end user must be legally eligible to possess and manufacture a firearm under the Gun Control Act of 1968. This product is not for the novice builder; it requires drilling of the trigger housing pin hole, locking block pin hole, and the slide stop lever pin hole, as well as removal of the frame tabs and final finishing of the trigger pocket. The polymer80 pf45 80% full size frame and jig kit (glock 20/21 compatible) is ideal for those constructing a dedicated 10mm hunting sidearm or a .45 ACP duty-style pistol, where full-size frame dimensions are required for recoil management and magazine capacity. It is also suited for builders who want to retain standard Glock magazine compatibility while using a non-serialized frame.

• Builder skill level: Intermediate to advanced. Requires use of a drill press or high-quality hand drill, calipers, and files for final fitting.
• Recommended parts: Gen3 Glock 20 or 21 slide and barrel assembly, OEM or aftermarket lower parts kit, and standard Glock 20/21 magazines.
• Legal status: The frame is an unfinished component and is not a firearm as defined by 18 U.S.C. 921(a)(3). The completed frame becomes a firearm only after significant machining and assembly.

Shipping & FFL

This product ships directly to your residential or business address. No Federal Firearms License (FFL) transfer is required for this 80% frame and jig kit, as the item does not meet the legal definition of a firearm under federal law. However, the purchaser is solely responsible for ensuring that possession, completion, and ownership of this product are legal in their jurisdiction. Some states and localities impose restrictions on the possession or purchase of unfinished frames. By purchasing this polymer80 pf45 80% full size frame and jig kit (glock 20/21 compatible), you certify that you are not prohibited from receiving or manufacturing firearms under federal or state law, and that you will comply with all applicable laws regarding the completion and serialization of the finished frame.

• Shipping: Ships via UPS or FedEx ground. Signature may be required at carrier discretion. No P.O. Box shipping.
• FFL requirement: None at time of purchase. No transfer fees. No background check required for the raw frame.
• Compliance: Purchaser must be 18 years or older (21 for handgun frame in some states). Check your state and local laws before ordering. No returns on completed or modified frames.