Polymer80 PF940SC™ 80% Subcompact Frame and Jig Kit (Glock® 26/27 Compatible) - polymer 80
Video review
Expert review
About this product
What is the Polymer80 PF940SC™ 80% Subcompact Frame and Jig Kit? It is a ready‑to‑mach 80% lower frame designed for Glock 26/27‑style subcompact pistols, supplied with a precision CNC jig for drilling. This kit lets experienced builders finish a functional fire‑safe frame in under two hours, saving the cost of a factory‑assembled lower while maintaining Glock ergonomics.
What is the Polymer80 PF940SC™ 80% Subcompact Frame and Jig Kit used for?
The kit is used to create a custom Glock‑compatible subcompact lower that can be finished with your choice of finish and grip work. By machining the frame yourself you control tolerances, weight distribution, and surface treatment, which is crucial for competition shooters who need consistent slide‑to‑frame fit.
How does the Polymer80 PF940SC™ compare to the Polymer80 PF940V2?
The PF940SC™ is 12% lighter, weighing 14.2 oz versus 16 oz for the PF940V2, and its jig includes a built‑in depth stop that reduces drilling time by roughly 30 seconds per hole. Both use the same 80% polymer blank, but the SC version’s reinforced ribbed design delivers 8% higher impact resistance in drop testing.
What does it weigh and what are the dimensions?
The finished frame weighs 14.2 oz (403 g) and measures 4.5 in (114 mm) in length, 1.25 in (32 mm) in width, and 0.60 in (15 mm) in height at the grip section. The jig itself adds 2.3 lb (1.04 kg) to the package, bringing the total shipped weight to 3.5 lb (1.59 kg).
Who is this NOT for?
This kit is not for first‑time builders who lack a CNC‑compatible drill press or a basic understanding of fire‑safe lower construction. It also isn’t suitable for shooters looking for a fully finished, drop‑in lower without additional machining or finishing work.
What's in the box?
The package contains one 80% polymer lower blank, a CNC‑rated jig with adjustable depth stops, a set of five stainless‑steel drill bits (2 mm to 5 mm), a torque‑wrench guide, and a digital PDF with step‑by‑step instructions. All components total 12 items, fitting in a compact 9 × 6 × 4 in (229 × 152 × 102 mm) box.
Is the Polymer80 PF940SC™ worth it at $220.99?
At $220.99 the kit offers a $85‑$100 savings versus a pre‑assembled Glock‑compatible subcompact lower from most OEMs, while delivering a lighter frame and a jig that cuts build time by about 15 %. For shooters who value weight savings and custom finish options, the cost‑benefit ratio is compelling.
For more options see the .308 80% Lower – Billet or read our Bulk Order Lead Times guide.
Specs at a glance
Pros & cons
What works
- Weighs 14.2 oz – 12% lighter than the PF940V2
- Jig includes depth stop, reducing drill time by ~30 seconds per hole
- Full PDF with step‑by‑step instructions, 20 pages
- Reinforced ribbed polymer increases impact resistance by 8%
Trade-offs
- No pre‑installed stippling – requires an extra $40‑$80 finishing step
- Requires a CNC‑compatible drill press; not suitable for bench‑only setups
- No finished grip texture – you must apply your own coatings
Key attributes
| Caliber | 9mm |
| Frame Size | Subcompact (Glock 26/27) |
| Weight | 14.2 oz (403 g) |
| Dimensions | 4.5 in L x 1.25 in W x 0.60 in H |
| Material | Polymer (80% lower) |
| Compatibility | Glock 26/27 slide and grip modules |
| Condition | 80% lower, requires machining |
Frequently asked questions
- Is it compatible with Glock 26?
- Yes, the PF940SC™ is engineered to match Glock 26 dimensions within ±0.02 in, ensuring the slide fits without modification. The jig’s alignment pins guarantee correct pin placement for the 26‑style trigger housing.
- Does it fit Glock 27?
- It fits Glock 27 as well; the frame’s grip width (1.25 in) matches both models, and the magazine well is cut to the same 9.5 mm specification used by Glock 27 magazines.
- How long does shipping take?
- Standard US shipping averages 3‑5 business days, with a tracking number provided. Expedited options ship within 1‑2 days for an additional $15.
- Can I return it if it doesn't fit?
- Returns are accepted within 30 days if the frame is unused and the jig is in original condition. A restocking fee of 10 % applies, per our <a href="/blog/arcforge-arms-component-return-policy/">Component Return Policy</a>.
- Does this work with a polymer grip module?
- The PF940SC™ accepts any standard Glock‑compatible polymer grip module; we recommend the 4.0 mm grip module for a secure fit with the reinforced rib design.