The Polymer80 PF940C 80% Frame Kit is a compact, unfinished receiver designed for the dedicated hobbyist who values the process of building their own firearm. This kit provides the core foundation for a custom Glock®-compatible build, requiring machining and assembly to complete. It’s become one of our steady sellers since we started stocking it in January 2026, and we maintain a deep inventory specifically to avoid the backorders that commonly plague this popular item.
Stand-Out Features
- Compact Form Factor: Designed for Glock® 19-size slides and parts, offering a balanced size for carry or range use.
- Reinforced Polymer Construction: Engineered with internal metal reinforcements for durability where it counts.
- Jig-Included Design: Comes with the necessary jig to accurately guide the final machining steps for the fire control group.
- Ergonomic Grip Texture: Features an aggressive texture pattern for a secure, non-slip grip during handling.
- Serial Number Plate Area: Includes a flat, recessed area on the frame for applying a serial number in accordance with applicable laws if you choose to serialize your build.
Technical Data
| Model | PF940C |
| Compatibility | Glock® 19 Gen 3 Parts |
| Frame Material | Reinforced Polymer |
| Jig Included | Yes |
| Weight (measured) | 4.4 oz |
| Finish | Matte Black |
| Status | 80% (Unfinished Receiver) |
| Includes | Frame, Jig, Drill Bits, Pins |
Your Questions Answered
What tools are needed to complete this frame?
You will need a hand drill or drill press, a Dremel tool or router with a 1/4″ collet, and basic hand tools like a hammer and punch set. The included jig and drill bits guide the process for milling the fire control group cavity and drilling the pin holes.
Is this legal to purchase in my state?
Laws regarding 80% frames vary significantly by state and locality. It is the purchaser’s sole responsibility to research, understand, and comply with all federal, state, and local laws before ordering. We do not ship to jurisdictions where possession or completion is prohibited.
What parts do I need to finish a build?
To complete a functional firearm, you will need to source a Glock® 19 Gen 3 parts kit (lower parts kit), a slide assembly (slide, barrel, recoil spring), and magazines. This kit provides only the unfinished frame and completion tools.
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