Blackjackfirearms is a Phoenix, AZ-based retailer specializing in AR-15 parts, firearm accessories, and custom builds. The Polymer80 PF940C 80% Compact Pistol Frame Kit is a lightweight, durable frame designed for Gen 3 Glock 19 builds. Its ergonomic design and compatibility with standard Glock parts make it a favorite among DIY builders. Available now for $159 with same-day shipping from Phoenix.
Reviewed by Wyatt Calder, Owner & FFL Holder at Blackjackfirearms. Arizona-licensed FFL dealer since 2017, AR-15 armorer & Sonoran Desert hunter.
Last updated: May 2026
| Product Type | 80% Pistol Frame Kit |
|---|---|
| Material | High-strength polymer |
| Manufacturing | Injection molded |
| Finish | Matte black |
| Hardness/Quality | Durable, impact-resistant |
| Compatibility | Gen 3 Glock 19 parts |
| Installation/Usage | Requires milling and assembly |
| Weight | 5.8 oz |
| Dimensions | 7.5″ x 5.25″ x 1.25″ |
| Country of Origin | USA |
| Condition | New |
| SKU | PF940C |
Key Features
- Ergonomic Design: Built for comfort and control during extended use.
- Lightweight Construction: Weighs just 5.8 oz for easy handling.
- Compatibility: Works seamlessly with Gen 3 Glock 19 parts.
- Durability: High-strength polymer ensures long-lasting performance.
- Customizable: Perfect for DIY builders looking for a personalized firearm.
Who It’s For
Buy it if:
- You’re a DIY enthusiast looking to build a custom Glock 19.
- You prefer lightweight, ergonomic pistol frames.
- You want a durable, USA-made frame for your project.
Skip it if:
- You’re looking for a pre-assembled frame (check out our Complete Pistols).
- You need compatibility with Gen 4 or Gen 5 Glock parts.
Pros & Cons
✅ Lightweight and ergonomic design
✅ Compatible with Gen 3 Glock 19 parts
✅ Durable, high-strength polymer construction
✅ Made in the USA
✅ Perfect for custom builds
❌ Requires milling and assembly (see our Tools for milling jigs)
❌ Not compatible with Gen 4 or Gen 5 Glock parts
Comparison
| Feature | Polymer80 PF940C | Cheap Import Frame | Premium Brand Frame |
|---|---|---|---|
| Material | High-strength polymer | Lower-grade polymer | Premium polymer |
| Quality | Durable | Less durable | Very durable |
| Compatibility | Gen 3 Glock 19 | Limited compatibility | Gen 3 Glock 19 |
| Shipping | Same-day | Slow | Standard |
| Lifespan | Long-lasting | Shorter lifespan | Long-lasting |
| Price | $159 | $60-$80 | $250+ |
FAQ
Is the Polymer80 PF940C compatible with Gen 4 Glock parts?
No, the PF940C is designed for Gen 3 Glock 19 parts only.
Does this frame require milling?
Yes, the PF940C is an 80% frame and requires milling to complete.
What tools are needed to complete the frame?
You’ll need a milling jig, drill press, and basic hand tools. Check out our Tools section for everything you need.
Is the Polymer80 PF940C legal in my state?
Most states allow ownership of 80% frames, but always check your local laws before purchasing.
Where can I buy the Polymer80 PF940C online?
You can purchase the PF940C right here at Blackjackfirearms.
What is the weight of the Polymer80 PF940C?
The PF940C weighs 5.8 oz.
Is the Polymer80 PF940C made in the USA?
Yes, the PF940C is proudly made in the USA.
✅ In stock — ready to ship today
✅ Same-day shipping from Phoenix, AZ
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
Browse more: P80 Kit | Full Shop
About this review: Written by Wyatt Calder, Owner & FFL Holder at Blackjackfirearms. Last updated: May 2026
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