Polymer80 PF45 80% Pistol Frame Only

Build your full-size .45 ACP or 10mm pistol with the Polymer80 PF45 80% pistol frame only. This unfinished frame provides a legal, build-it-yourself platform for shooters who want a custom firearm without serialization requirements. Compatible with Glock 21 and Glock 20 Gen 3 parts, the PF45 is the largest frame in the Polymer80 lineup, designed for those who need a full-size grip and longer dust cover. As an 80% frame, it requires drilling, milling, and finishing to complete the lower receiver. This is the frame only—no jig, tooling, or parts kit is included.

Overview

The Polymer80 PF45 80% pistol frame only is a precision-machined, unfinished polymer frame that allows you to legally manufacture your own pistol. Unlike fully completed frames, this 80% variant ships directly to your door without an FFL transfer (subject to state and local laws). The PF45 platform is designed for high-recoil calibers, offering a robust grip angle and reinforced front rails. Whether you are building a dedicated 10mm hunting sidearm or a .45 ACP range pistol, this frame accepts standard Gen 3 Glock parts, including slide, barrel, lower parts kit, and magazines. Each frame is serial-number-free until you complete the build, giving you full control over the final configuration.

Features & Specs

• Manufacturer: Polymer80 | Category: Frames | Caliber Compatibility: .45 ACP, 10mm Auto
• Frame Finish: Black textured polymer with aggressive stippling on grip and front/rear serrations | Rail System: Polymer80 front rail system with steel locking block insert
• Compatibility: Accepts all Gen 3 Glock 20/21 slides, barrels, lower parts kits, and magazines (17-round G21 / 15-round G20)

• Grip Dimensions: Full-size double-stack grip with 1913 Picatinny accessory rail on dust cover | Trigger Guard: Standard Glock-style with undercut for high-grip shooting
• Material: Glass-reinforced nylon polymer | Weight: Approximately 3.2 ounces (frame only, no jig or hardware)
• Fire Control Pocket: Pre-molded for standard Glock trigger mechanism housing and ejector | Slide Rails: Requires minor fitting of rear rail module (sold separately)

• Drilling/Milling Required: Three pin holes (trigger, hammer, locking block) and slide rail channel must be completed | Tools Needed: Drill press or Dremel, 3mm and 4mm drill bits, files, and sandpaper
• Legal Status: This is an 80% frame and does not contain a serial number. Completion of the frame into a functional firearm requires compliance with all local, state, and federal laws. Not for sale to residents of California, New Jersey, New York, Washington, or any jurisdiction prohibiting 80% frames.

Who It Is For

The Polymer80 PF45 80% pistol frame only is built for experienced DIY builders who want a full-size heavy-caliber pistol without going through a dealer. It is ideal for shooters who already own Gen 3 Glock 20 or 21 parts and want a custom-finished frame with no serial number. This frame suits those who understand the mechanical and legal requirements of completing an 80% build. It is not for beginners or for those who need a drop-in ready frame. If you are comfortable with a drill press and have a lower parts kit ready, this frame delivers the largest grip and longest barrel support in the Polymer80 lineup.

Shipping & FFL

This Polymer80 PF45 80% pistol frame only ships directly to your residential or business address within the United States. No Federal Firearms License (FFL) transfer is required because the frame is not yet a firearm. However, you must be 21 years of age or older and comply with all state and local laws. By purchasing this item, you certify that you are legally allowed to possess firearm parts and that you will complete the frame in accordance with applicable laws. We do not ship to P.O. boxes or to any jurisdiction where 80% frames are prohibited. Check your local laws before ordering. This is a frame-only item; no jig, drill bits, or parts kit are included.