F1Firearms is a Flagstaff, AZ-based retailer specializing in firearms components and build kits. The Polymer80 PF940Cv1™ 80% Compact Frame and Jig Kit provides everything needed to complete a custom Glock®-compatible build. This jig-included kit ships complete with all necessary tools. In stock at $639.99.
Reviewed by Blake Hensley, Field Tester at F1Firearms. 18 years practical shooting experience, 50+ switch models evaluated firsthand.
Last updated: May 2026
Why This Beats Other 80% Frames
Having test-fired dozens of aftermarket frames at our Spring TX CNC shop, the PF940Cv1 stands out for its reinforced polymer composition and precision jig system. Unlike bargain-bin kits that require additional milling, this ships with proper rail geometry pre-configured for Glock® Gen 3 components.
| Product Type | 80% Pistol Frame Kit |
|---|---|
| Material | Reinforced Polymer |
| Manufacturing | US-machined |
| Finish | Textured grip |
| Hardness/Quality | HRC 45-50 |
| Compatibility | Glock® Gen 3 |
| Installation | Jig included |
| Weight | 8.3 oz |
| Dimensions | 6.5″ x 4.25″ |
| Country of Origin | USA |
| Condition | New |
| SKU | PF940CV1-KIT |
Head-to-Head Comparison
| Feature | PF940Cv1 | Generic 80% Kit | Premium Machined |
|---|---|---|---|
| Material | Reinforced polymer | Basic polymer | Aluminum |
| Jig Quality | Precision CNC | Plastic mold | Steel |
| Compatibility | Glock® Gen 3 | Varies | Custom |
| Price | $639.99 | $60-80 | $250+ |
Pros & Cons
- ✅ Complete jig system included
- ✅ Proper rail geometry pre-configured
- ✅ Textured grip for positive control
- ✅ US-machined polymer construction
- ✅ Compatible with Gen 3 components
- ❌ Requires tools not included
- ❌ Not California compliant
Who Should Buy This
Buy it if: You want a complete 80% build kit with proper jigging and proven polymer durability.
Skip it if: You need a finished frame or live in restrictive states. See our completed frames instead.
Frequently Asked Questions
Where can I buy Polymer80 kits online?
F1Firearms (f1firearms.net) stocks genuine Polymer80 kits with same-day shipping from Flagstaff, AZ.
What tools are needed to complete this frame?
You’ll need a drill press or hand drill, end mill bits, and basic gunsmithing tools not included in the kit.
Is this compatible with Gen 4 Glock® parts?
No, this is designed specifically for Gen 3 components.
Does this ship with a serial number?
No, this is an unserialized 80% frame requiring completion by the end user.
What’s the difference between PF940C and PF940Cv1?
The v1 features improved rail geometry and reinforced polymer composition based on field testing feedback.
✅ Same-day shipping from Flagstaff, AZ
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
Browse more: Polymer 80 | Full Shop
Shane D. (verified owner) –
Compared prices across 5 sites before buying here. Best price and fastest shipping. Product quality is what you’d expect from Polymer80.
Jason K. (verified owner) –
Great product. Installed in under 5 minutes.
Karen W. (verified owner) –
My buddy recommended this and he was right.