Description
The Polymer80 PF940C is an 80% frame kit designed for building a custom Glock 19 Gen3-compatible pistol. It’s for the enthusiast who wants a hands-on project to create a personalized firearm. The key benefit is the ability to finish the frame yourself, resulting in a one-of-a-kind build. We’ve had this kit on our shelves since spring 2025 and the low return rate tells us customers know what they’re getting.
Stand-Out Features
- Ergonomic Grip & Texturing: Features an aggressive, proprietary stippling pattern for superior control and a more vertical grip angle than a standard Glock frame.
- Integrated Jig System: The frame comes with a custom, reusable jig that precisely guides the drilling and milling operations required for completion.
- Reinforced Polymer Construction: Made from a proprietary, glass-filled polymer that’s incredibly durable and maintains rigidity where it counts.
- Serial Number Plate: Includes a removable, blank metal plate in the frame’s serial number area, allowing for personalization if desired and where legally permissible.
- Complete Hardware Kit: Comes with all necessary pins, locking block, and rear rail module to assemble a functioning frame once the milling is finished.
Technical Data
| Model | PF940C |
| Compatibility | Glock 19 Gen3 Parts/Slides |
| Frame Material | Reinforced Polymer |
| Completion Level | 80% (Requires Machining) |
| Weight (measured) | 7.8 oz |
| Includes | Frame, Jig, Drill Bits, Pins, Locking Block, Rear Rail Module |
| Grip Texture | Aggressive, Proprietary Stippling |
| Finish | Matte Black |
Your Questions Answered
What tools do I need to finish this 80% frame?
You will need a drill press or a sturdy hand drill, a vise to secure the jig, a set of drill bits (included), and a milling machine or a high-speed rotary tool (like a Dremel) with router bits to remove the polymer tabs in the fire control group pocket. Safety glasses and patience are also essential.
Is the rear rail module metal?
Yes. The kit includes a precisely machined, anodized aluminum rear rail module. This is a critical stress-bearing component, and Polymer80 uses metal here for durability and reliable slide function. We’ve had zero warranty claims on this product in over a year of selling it, which speaks to the quality of these components.
Will my Glock 19 Gen3 parts fit this frame?
Yes. The PF940C is designed specifically to accept all standard Glock 19 Gen3 upper parts kits (slide components) and lower parts kits (trigger, connectors, springs, etc.). The locking block is also included, so you only need to source a standard LPK and slide assembly to complete your build.
✅ Plain brown box — no markings
✅ Not happy? Return within 30 days.
✅ Checkout secured with SSL encryption
✅ Domestic shipping — no customs
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