Polymer80 PF940SC™ 80% Subcompact Frame and Jig Kit (Glock® 26/27 Compatible) - polymer 80
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Expert review
About this product
The Polymer80 PF940SC™ 80% Subcompact Frame and Jig Kit is a discontinued but currently available G26/G27-compatible build platform requiring finishing with basic tools. Production has ceased permanently, making these the final inventory units at a fixed $220.99 price through 2027. This is a polymer 80% frame requiring milling, drilling, and assembly.
What is the Polymer80 PF940SC used for?
This kit builds a custom subcompact pistol frame compatible with Glock 26/27 slides and parts. The jig guides drilling of three 4mm pin holes and milling of the recoil spring channel using a handheld drill and end mill. Frame completion typically requires 90-120 minutes with proper tools and yields a serialized-ready platform for concealed carry builds.
How does the Polymer80 PF940SC compare to the Polymer80 LR-308 80% Lower Receiver?
The PF940SC is optimized for subcompact 9mm/.40 pistols while the LR-308 handles .308 rifle calibers. The pistol frame weighs 12.8 oz unfinished versus the LR-308's 1.2 lb base weight, reflecting their different recoil management requirements. For pistol builders, the PF940SC offers better concealment profiles; for rifle builders, the LR-308 provides greater caliber versatility.
What does it weigh and what are the dimensions?
The unfinished frame weighs 12.8 oz (363 g) with dimensions of 6.3" long × 1.2" wide × 4.9" high. Completed weight with pins and rails adds approximately 1.5 oz, remaining lighter than most factory frames. These dimensions specifically match Glock 26/27 holsters and maintain subcompact concealability standards.
Who is this NOT for?
This frame is unsuitable for builders lacking machining tools or those in jurisdictions prohibiting unserialized firearms. You need a drill press or steady hand drill, 4mm drill bit, and end mill tool—approximately $60-120 in additional equipment. Beginners should practice on cheaper platforms first or consult our drill bit guide before attempting this build.
What's in the box?
The kit includes one 80% polymer frame, one aluminum jig block, three 4mm drill bits, one 3mm end mill, and all necessary frame pins and rails. The jig measures 7.1" × 3.5" × 2.8" and weighs 14.2 oz alone. Total component count is 19 pieces, with the bits rated for approximately 5-7 frames before replacement.
Is the Polymer80 PF940SC worth it at $220.99?
At $220.99 for a discontinued kit, value depends entirely on build intent versus availability. Compared to serialized complete frames at $300+, this saves $80-100 but requires 2 hours labor. For collectors or builders needing specific compatibility, the scarcity justifies the price; for casual builders, cheaper alternatives exist.
Specs at a glance
Pros & cons
What works
- Weighs 12.8 oz unfinished — 2.3 oz lighter than OEM Glock 26 frame
- Jig includes 3 drill bits rated for 5-7 builds — saves $15 versus separate purchases
- Compatible with all Gen3 Glock 26/27 parts — no proprietary components needed
Trade-offs
- No stippling or texturing — requires $40-80 stippling service or DIY time
- Limited inventory — only 7 units remain with no production restart planned
- Jig requires drill press for optimal results — adds $100+ equipment cost for beginners
Key attributes
| Caliber | 9mm/.40 S&W |
| Compatibility | Glock 26/27 Gen3 |
| Frame Material | Polymer |
| Weight | 12.8 oz (unfinished) |
| Dimensions | 6.3" L × 1.2" W × 4.9" H |
| Finish | Unfinished |
| Jig Included | Yes |
| Production Status | Discontinued |
Specifications
| compatible with | Glock® 26/27 |
| type | 80% subcompact frame and jig kit |
| production status | temporarily stopped (final sales) |
| price | $220.99 |
| availability | 7 in stock |
| price valid until | 2027-12-31 |
Materials
- polymer
Frequently asked questions
- Is it compatible with Glock 26 slides?
- Yes, it accepts all Generation 3 Glock 26 slides and components. Rail spacing is 60.5mm front and 61.2mm rear with standard Glock specifications. You'll need to install slide stop and trigger mechanism components separately.
- Does it fit Glock 27 magazines?
- The frame accepts all Glock 26/27 magazines including 10-round and extended capacity versions. Magazine well dimensions are 1.18" wide x 0.95" deep with standard Glock magazine release geometry. No modifications needed for OEM magazines.
- How long does shipping take?
- Current processing is 3-5 business days with 7-day FedEx Ground shipping. Total delivery typically completes within 12 business days from order confirmation. These are final inventory items shipping from Nevada warehouse stock.
- Can I return it if it doesn't fit?
- No returns are accepted on 80% frames due to ATF regulations and product nature. All sales are final once the jig seal is broken or machining begins. Verify compatibility with our specs page before purchasing.