Polymer80 PF940Cv1™ 80% Compact Frame and Jig Kit (Glock® 19/23 Compatible) - polymer 80
About this product
What is the Polymer80 PF940Cv1™ 80% Compact Frame and Jig Kit? It's a partially completed polymer firearm frame requiring user machining to finish. Production has ceased, making remaining units final inventory. This kit enables legal completion of a compact frame compatible with Glock 19/23 components.
What is the Polymer80 PF940Cv1 used for?
This kit builds a functional firearm frame requiring user completion. The 80% completion state means you must drill three pin holes and remove three polymer tabs using the included jig. This process typically takes 45-60 minutes with a drill press and router. The completed frame accepts standard Glock 19/23 upper assemblies and magazines.
How does the Polymer80 PF940Cv1 compare to the Polymer80 LR-308 80% Lower Receiver?
The PF940Cv1 serves pistol platforms while the LR-308 supports rifle builds. The PF940Cv1 weighs 8.2 oz unfinished versus the LR-308's 14.5 oz. For pistol builders needing compact dimensions (6.7" length x 1.3" width), the PF940Cv1 is superior; for AR-10 platforms, the LR-308 is mandatory.
What does it weigh and what are the dimensions?
The unfinished frame weighs 8.2 ounces with dimensions of 6.7 inches long, 1.3 inches wide, and 5.1 inches tall. The steel jig adds 2.1 pounds to the total package weight. Completed frame weight averages 9.8 ounces depending on finishing technique. These measurements align with standard Glock 19 frame specifications.
Who is this NOT for?
This kit isn't for buyers seeking a drop-in solution or lacking machining tools. Completion requires a drill press capable of 2000 RPM and a router with 1/4" bit. Those unfamiliar with frame safety checks should avoid this product. For pre-built alternatives, see our guide on frame material comparisons.
What's in the box?
The kit contains one 80% polymer frame, one steel jig, three drill bits (3mm, 4mm, 5mm), and one rear rail module. The drill bits are carbon steel with 118-degree tips rated for 50 uses. The jig has precisely machined guide holes within ±0.002" tolerance. No drill press or router is included despite being required.
Is the Polymer80 PF940Cv1 worth it at $220.99?
At $220.99, this kit represents fair value for discontinued inventory. Compared to completed aftermarket frames costing $300+, the savings justify the machining time. Given production cessation, availability drives value more than price. Those needing immediate functionality should consider completed frames elsewhere.
Specs at a glance
Pros & cons
What works
- Weighs 8.2 oz unfinished — 2.3 oz lighter than Polymer80 PF940V2
- Jig maintains ±0.002" hole alignment tolerance
- Includes three drill bits rated for 50 uses each
- Accepts standard Glock 19/23 magazines without modification
Trade-offs
- No drill press included — requires 2000 RPM capability
- Rear rail module may require hand fitting (adds 15-20 minutes)
- No stippling or texture pre-applied — adds $40-80 finishing cost
- Production discontinued — no manufacturer support available
Expert review
Key attributes
| Caliber | 9mm/.40 S&W |
| Frame Material | Polymer |
| Completion Percentage | 80% |
| Compatibility | Glock 19/23 Gen3 |
| Weight Unfinished | 8.2 oz |
| Dimensions | 6.7" x 1.3" x 5.1" |
| Jig Material | Steel |
| Finish | Black Polymer |
Specifications
| compatibility | Glock 19/23 |
| frame_type | Compact |
| completion_percentage | 80% |
Materials
- polymer
Frequently asked questions
- Is it compatible with Glock 19 slides?
- Yes, it accepts standard Glock 19 generation 3 slides. The frame rail dimensions are 0.492 inches wide with 0.118 inch height. Ensure slides are Gen3 compatible for proper fitment.
- Does it fit Glock 23 components?
- It accepts Glock 23 uppers and magazines when using .40 cal barrels. Frame rail specifications match Gen3 patterns. Magazine well width is 1.30 inches for double-stack .40 cal magazines.
- How long does shipping take?
- Standard shipping is 3-5 business days within continental US. Express options available for 2-day delivery. International shipments require 10-15 days plus customs clearance.
- Can I return it if I damage during completion?
- No returns accepted on partially completed or damaged frames. The jig and bits are returnable within 30 days if unused. Completion errors void all warranty claims.
- Does this work with aftermarket triggers?
- Compatible with most Glock 19 aftermarket triggers from brands like Apex Tactical. Trigger housing dimensions are standard Gen3 specification. Connector angle may require minor fitting.