PF45 Frame Kit – Large Frame (G20/21)
Unlock the pinnacle of large-frame customization with the Polymer80 PF45 Frame Kit. Engineered for the dedicated builder, this 80% frame provides the ultimate foundation for crafting a full-size, high-performance pistol chambered in potent calibers like 10mm Auto and .45 ACP. The kit includes the iconic Jig, necessary drill bits, and a rear rail module, offering a rewarding and precise build experience that results in a truly personalized firearm tailored to your exact specifications and ergonomic preferences.
| SKU | P80-PF45-BLK |
| Frame Type | 80% Large Frame (G20/21) |
| Compatible Calibers | 10mm Auto, .45 ACP |
| Frame Material | High-Strength Polymer |
| Included Components | 80% Frame, Jig, Drill Bits, Rear Rail Module, Pins |
| Finish | Matte Black |
| Required Completion | Milling/Dremel Tool, Slide Parts Kit, Lower Parts Kit, Slide & Barrel |
What tools are required to complete this PF45 frame?
You will need a hand drill or drill press, a Dremel tool or end mill bit with a router, and basic hand tools. The included jig provides precise drilling guides, and the polymer material is engineered for clean milling. Always follow the official Polymer80 instructions for a safe and successful build.
Is this frame compatible with both Glock 20 and Glock 21 slides?
Yes. The PF45 frame is designed as a large-frame platform that accepts both Gen 3 Glock 20 (10mm) and Glock 21 (.45 ACP) slides, barrels, and magazines. You select the caliber based on the slide assembly and magazine you choose for your build, offering exceptional versatility from a single frame.
Does this kit include all the parts needed to build a functioning pistol?
No. This is an 80% frame kit. You must separately source a complete slide assembly (slide, barrel, recoil spring, and upper parts kit), a lower parts kit (LPK), and magazines. This kit provides the frame, jig, drill bits, and rear rail module to facilitate the completion of the frame itself.
What is the legal status of building an 80% pistol?
It is the builder’s sole responsibility to understand and comply with all federal, state, and local laws regarding the manufacture and ownership of firearms. For personal use, building an 80% frame into a completed firearm is federally legal, but it cannot be sold or transferred without serialization and an FFL. Always check your local regulations before purchasing.
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