Polymer80 PF940SC™ 80% Pistol Frame ONLY - polymer 80
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About this product
The Polymer80 PF940SC™ 80% Pistol Frame ONLY - polymer 80 is a sub-compact, unfinished polymer frame designed for builders to create a custom handgun compatible with Glock 26/27/33 components. Its production has been temporarily halted as the manufacturer transitions its product line. This listing represents one of the last opportunities to acquire this specific 80% frame configuration directly.
What is the Polymer80 PF940SC used for?
This 80% frame is used for building a custom, sub-compact 9mm or .40/.357 SIG handgun. The builder must complete the final 20% of machining, which includes milling the rear rail pocket and drilling the three necessary pin holes to specifications. Once finished, it accepts aftermarket or OEM Glock 26 internals, slides, and barrels, resulting in a personal firearm with a 10-round magazine capacity.
How does the Polymer80 PF940SC compare to the .308 80% Lower – Billet - polymer 80?
The PF940SC is a pistol frame optimized for compactness, while the .308 80% Lower is a rifle platform for larger calibers. The PF940SC is molded from polymer for a final weight of approximately 14.2 oz, while the .308 lower is machined from 7075-T6 aluminum billet, resulting in a significantly heavier and more rigid structure better suited for the pressures of a .308 Winchester/7.62x51mm NATO round.
What does it weigh and what are the dimensions?
The unfinished PF940SC frame weighs 220 grams (7.76 oz) and measures 165mm in overall length, 30mm in width at the rail, and 120mm in height. The completed frame, with all metal rails and pins installed, typically adds another 185 grams, bringing the total ready-to-assemble weight to approximately 405 grams (14.2 oz). The grip circumference is 5.75 inches.
Who is this NOT for?
This frame is not for first-time builders unfamiliar with basic gunsmithing or those who cannot legally possess or complete an 80% receiver in their jurisdiction. It requires the use of a drill press or router jig, precise measurement tools, and about 90-120 minutes of focused work. It is also not compatible with full-size Glock 17 slides without a significant adapter.
What's in the box?
The box contains only the single, unfinished Polymer80 PF940SC polymer frame. No jig, drill bits, rails, pins, or tooling are included. Builders must source these separately, which can add $75-$150 to the total project cost. For a complete starting kit, our Polymer80 80% Lower Receiver and Jig Kit (LR-308) offers a different platform but includes all necessary machining components.
Is the Polymer80 PF940SC worth it at $160.99?
At $160.99, its worth hinges on builder demand for this specific, discontinued sub-compact platform. Given the halted production, the price reflects scarcity for a niche build. For a builder who specifically wants this G26-size foundation and has the tools, it's a direct pathway. For someone prioritizing ease or a currently produced frame, exploring other channels or complete kits may offer better value per part included.
Specs at a glance
Pros & cons
What works
- Weighs 14.2 oz when complete — highly portable for sub-compact carry.
- Accepts standard Glock 26/27/33 magazines and components for easy parts sourcing.
- Polymer construction dampens felt recoil approximately 15% versus all-metal sub-compact frames.
- Discontinued model — potential for collector or niche builder value.
Trade-offs
- No completion jig included — adds $45-$65 and sourcing time to the project.
- Rear rail pocket requires precise milling; a misaligned cut of just 0.5mm can cause slide binding.
- Final finish is raw polymer — requires stippling or grip tape for secure handling, adding cost and labor.
- Limited availability due to halted production — no manufacturer warranty support.
Key attributes
| Caliber | 9mm, .40 S&W, .357 SIG |
| Platform Compatibility | Glock 26/27/33 Gen 3 |
| Frame Material | Proprietary Polymer Blend |
| Finish | Unfinished (Raw Polymer) |
| Magazine Capacity | 10 Rounds (Standard) |
| Overall Length | 165 mm (6.5 in) |
| Frame Width | 30 mm (1.18 in) |
| Condition | New 80% (Unserialized) |
Frequently asked questions
- Is it compatible with Glock 26 Gen 3 parts?
- Yes. The PF940SC frame is designed explicitly for compatibility with Glock 26 Gen 3 aftermarket and OEM components. This includes triggers, connectors, slide lock springs, magazine releases, and locking blocks. Confirm any aftermarket slide uses a standard Gen 3 recoil spring assembly.
- Does it fit standard Glock 26 holsters?
- Generally, yes, once completed. The external dimensions are molded to match a factory Glock 26 frame profile. However, aggressive custom stippling or rail-mounted accessories like lights may require a holster with specific clearance. Test fit with a standard Kydex Glock 26 holster from a maker like Vedder Holsters is recommended.
- What jig and tools are required to finish it?
- You need the proprietary Polymer80 PF940SC completion jig (sold separately), a drill press or router, a 3/8\" end mill, and specific drill bits: one 3mm and one 4mm. Detailed instructions are available in our technical guide, <a href="/blog/best-drill-bits-for-polymer-frame-modifications/">Best Drill Bits for Polymer Frame Modifications</a>. The milling process typically takes under two hours with proper setup.
- Can I have it shipped to California?
- No. This product cannot be shipped to California, nor to several other states with restrictive legislation regarding unfinished receivers. It is the buyer's responsibility to know and comply with all federal, state, and local laws before purchasing. We recommend consulting official state DOJ resources for the most current regulations.