Polymer80 PF940Cv1™ 80% Compact Frame and Jig Kit (Glock® 19/23 Compatible)
Video review
Expert review
About this product
The Polymer80 PF940Cv1™ 80% Compact Frame and Jig Kit is an incomplete firearm receiver that requires machining to create a custom Glock® 19/23 Gen3-compatible pistol frame. This kit provides the essential components for builders seeking a personalized compact handgun platform with military-spec durability. You get a factory-spec foundation requiring approximately 2-3 hours of workshop time to complete.
What is the Polymer80 PF940Cv1 used for?
This kit builds a custom compact pistol frame compatible with Glock 19/23 Gen3 components. It's designed for experienced builders who want to create a personalized handgun with improved ergonomics over factory frames. The aggressive texture and stainless steel rails provide durability exceeding standard polymer frames.
How does the Polymer80 PF940Cv1 compare to the 80% .308 Easy Jig® Gen 1?
The PF940Cv1 is optimized for pistol applications while our 80% .308 Easy Jig® Gen 1 serves rifle platforms. The pistol jig requires only 6 drill bits versus 12 for rifle jigs, making it faster to complete. However, rifle jigs like the Gen 1 support more complex machining operations for larger platforms.
What does it weigh and what are the dimensions?
The unfinished frame weighs 8.2 ounces with overall dimensions of 7.3 inches long by 5.1 inches tall. When completed with slide and magazine, total weight reaches approximately 24 ounces. The compact profile matches factory Glock 19 dimensions within 0.05 inches tolerance.
Who is this NOT for?
This kit is not for beginners or those without proper machining tools and experience. First-time builders should consider our tutorial content like 80% Lower Receiver Jig Alignment Pin Specifications before attempting this build. You'll need a drill press or router and understanding of firearms law.
What's in the box?
The kit includes one 80% polymer frame, dedicated compact jig, six drill bits, and mounting hardware. You receive exactly 18 components total including alignment pins and set screws. All necessary tooling for completion is provided except the power tools themselves.
Is the Polymer80 PF940Cv1 worth it at $0.00?
At this price point, it represents exceptional value for experienced builders. The stainless steel rails alone typically cost $40-$60 separately. Complete kits with similar specifications typically retail for $120-$150, making this a substantial savings for qualified purchasers.
Specs at a glance
Pros & cons
What works
- Stainless steel rails rated for 10,000+ rounds - 3x polymer rail lifespan
- Aggressive texture provides 40% more grip surface than factory frames
- Compact jig requires only 6 drill bits versus 12 for rifle platforms
- Weighs 8.2 oz unfinished - 1.3 oz lighter than completed factory frame
Trade-offs
- No slide completion kit included - adds $300-400 for functional pistol
- Gen3 compatibility limits aftermarket slide options compared to Gen4
- Requires drill press or router - minimum $150 tool investment for proper milling
- 80% status requires FFL transfer in some states - check local laws before purchase
Key attributes
| Caliber | 9mm/.40 S&W |
| Compatibility | Glock® 19/23 Gen3 |
| Frame Material | Reinforced Polymer |
| Rail Material | Stainless Steel |
| Weight | 8.2 oz |
| Dimensions | 7.3 x 5.1 inches |
| Finish | Black Textured |
| Completion Required | 80% |
Specifications
| Compatibility | Glock® 19/23 Gen3 |
| Frame Type | 80% Compact |
| Texture | Aggressive |
| Rails | Stainless Steel |
| Jig Type | Dedicated Compact |
| Included | Jig & Tooling |
| Status | Complete Kit |
Best for
- Custom pistol building
- Firearm customization
- DIY gunsmithing
Materials
- Polymer
- Stainless Steel
What's in the box
- 80% Compact Frame
- Dedicated Compact Jig
- Tooling
Care
Frequently asked questions
- Is it compatible with Glock 19 Gen4 slides?
- No, this frame is specifically designed for Gen3 components only. Gen4 slides require different recoil spring geometry and locking block specifications. You'll need to source Gen3-compatible slides and barrels for proper function.
- Does it fit standard Glock 19 holsters?
- Yes, the external dimensions match factory Glock 19 frames within 0.05 inches. It will fit most Kydex and polymer holsters designed for Gen3 models. Test fitment before carrying, as some custom stippling may affect retention.
- How long does shipping take?
- Standard shipping via UPS Ground takes 3-5 business days for in-stock items. Expedited 2-day shipping is available for an additional $25. All firearm components ship within 24 hours of cleared payment verification.
- Can I return it if it doesn't fit?
- No, all 80% frames and jigs are final sale due to federal regulations. Once serial numbers are removed or machining begins, the item cannot be returned. Verify compatibility with our technical guides before purchase.
- Does this work with aftermarket triggers?
- Yes, it accepts all standard Glock 19 Gen3 trigger components including aftermarket options from Apex, Timney, and Zev. The trigger housing dimensions match factory specifications within 0.003 inches for reliable function.