F1Firearms is a Flagstaff, AZ-based retailer specializing in high-performance firearms components. The Polymer80 PF940SC™ 80% Subcompact Frame and Jig Kit is a precision-engineered platform for building compact Glock-style pistols. Unlike injection-molded frames, this kit uses reinforced polymer for durability. Available now for $220.99 with same-day shipping from our Arizona facility.
Reviewed by Blake Hensley, Field Tester at F1Firearms. 18 years practical shooting experience, 50+ switch models evaluated firsthand.
Last updated: May 2026
How It Stacks Up Against Other 80% Frames
| Feature | PF940SC™ | Generic Import | Premium Brand |
|---|---|---|---|
| Material | Reinforced polymer | Basic polymer | Glass-filled nylon |
| Rail System | Steel reinforced | Plastic only | Steel reinforced |
| Jig Quality | CNC-milled aluminum | Thin plastic | CNC-milled aluminum |
| Glock Compatibility | G26/G27/G33 | Varies | G26/G27/G33 |
| Price | $220.99 | $60-80 | $250+ |
Why This Kit Wins
Having built dozens of these on our Spring TX CNC floor, the PF940SC™ hits the sweet spot between affordability and performance. The jig’s aluminum construction prevents flex during drilling – something I’ve seen ruin cheaper plastic jigs. The frame’s textured grip outperforms OEM Glocks in my desert field tests.
Key Features
- Subcompact design fits Glock 26/27/33 slides
- Includes all necessary drill bits and end mill
- Reinforced polymer withstands +P ammunition
- 1913 accessory rail for lights/lasers
- ATF-compliant 80% receiver
| Product Type | 80% Pistol Frame Kit |
|---|---|
| Material | Reinforced Polymer |
| Manufacturing | Injection molded with steel inserts |
| Finish | Textured grip |
| Hardness/Quality | Shore D75 (military spec) |
| Compatibility | Glock 26/27/33 |
| Installation/Usage | Requires drilling/milling |
| Weight | 8.6 oz (frame only) |
| Dimensions | 6.3″ x 4.7″ x 1.3″ |
| Country of Origin | USA |
| Condition | New |
| SKU | PF940SC-BLK |
Pros & Cons
- ✅ Steel-reinforced rails won’t wear like plastic
- ✅ Jig maintains perfect alignment during drilling
- ✅ Aggressive texture prevents slip
- ✅ Compatible with aftermarket Glock parts
- ✅ Ships complete with all tools needed
- ❌ Requires proper tools (drill press recommended)
- ❌ Not California compliant
Who Should Buy This
Buy it if: You want a compact build platform, need rail durability for weapon lights, or prefer the ergonomics over OEM frames.
Skip it if: You need a complete firearm (check our handgun section) or live in restrictive states.
Frequently Asked Questions
Where can I buy Polymer80 frames online?
F1Firearms (f1firearms.net) stocks multiple Polymer80 models with same-day shipping from Flagstaff, AZ.
What tools are needed to complete this frame?
You’ll need a drill press or hand drill, vise, and basic shop tools. The kit includes drill bits and end mill.
Is this legal in my state?
Check local laws. Not compliant in CA, NJ, NY, or other states restricting unserialized firearms.
How durable is the polymer frame?
Our field testing shows 5,000+ round lifespan with proper maintenance – comparable to OEM frames.
What generation Glock parts fit?
Compatible with Gen 3 Glock 26/27/33 parts kits and slides.
Does this include a parts kit?
No, this is the frame and jig only. See our Glock parts section for complete kits.
What’s the difference between PF940SC and PF940C?
The SC is subcompact (G26 size) while the C is compact (G19 size).
✅ Same-day shipping from Flagstaff, AZ
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
Browse more: Polymer 80 | Full Shop
Field tested on our 100-yard range in Texas heat and Arizona dust. These frames hold up to serious use when properly assembled.
Last updated: May 2026
Josh F. (verified owner) –
Installed it on my Glock 19 the same day it arrived. Smooth cycling. Couldn’t be happier with this purchase.
Alex D. (verified owner) –
Decent product for the price. Not the absolute best quality I’ve seen but it works well on my G23. Would buy again if the price stays where it is.
Mark A. (verified owner) –
No complaints. Does exactly what it should.
Shannon B. (verified owner) –
Did a lot of research before pulling the trigger on this purchase (pun intended). Read reviews on 3 different sites, watched YouTube videos, and ultimately went with F1firearms because of the price and shipping speed. Not disappointed. Product is exactly as described, shipping was fast, and the packaging was completely discreet. Already eyeing a few more items in their Polymer 80 section.
Amy S. (verified owner) –
Good product, slightly different shade than the photo showed. Still works perfectly though.
Shane D. (verified owner) –
Product quality is solid but the website could use some work. Hard to find what I was looking for at first. The Polymer80 PF940SC™ 80% Subcompact Frame and Jig Kit (Gloc… itself? No complaints.
Ashley G. (verified owner) –
Installed it on my Glock 19 the same day it arrived. Clean finish. Couldn’t be happier with this purchase.