Polymer80 PF940v2™ 80% Full Size Frame and Jig Kit (Glock® 17/22/24/31/34/35 Compatible) - polymer 80
About this product
The Polymer80 PF940v2™ 80% Full Size Frame and Jig Kit is an unfinished receiver and tooling set designed for constructing a compatible handgun frame using a Glock® 17/22/24/31/34/35 parts kit. This is a manufacturing project requiring specialized tools and technical skill. ModFuze provides this description for technical reference only, as production of these kits has ceased industry-wide.
What is the Polymer80 PF940v2™ 80% Full Size Frame and Jig Kit used for?
This kit is used to manufacture a functional, serialized pistol frame that accepts common Gen 3 Glock® large-frame slides and parts. It requires drilling three precise 4mm pin holes and milling the front and rear rail channels using a standard drill press or router, a process taking approximately 90 minutes for a skilled user. The resulting frame is compatible with aftermarket slides, barrels, and triggers designed for the Glock 17 platform.
How does the Polymer80 PF940v2™ compare to the Polymer80 LR-308 80% Lower Receiver?
The PF940v2 is designed for handgun calibers like 9mm and .40 S&W, while the Polymer80 LR-308 80% Lower Receiver is built for the .308 Winchester/7.62x51mm rifle platform. The rifle lower requires milling a significantly larger fire control group pocket, measuring approximately 1.125" x 0.700", compared to the smaller, simpler channels on the pistol frame. For builders focused on pistol platforms, the PF940v2 offers a more compact project.
What does it weigh and what are the dimensions?
The unfinished polymer frame blank has a finished weight of approximately 10.8 ounces (306 grams) and external dimensions of 8.5" long by 1.3" wide. The included aluminum jig adds 1.2 pounds to the total package weight. These measurements are critical for checking fitment in aftermarket holsters and calculating final assembled weight with a slide.
Who is this NOT for?
This kit is not for beginners lacking machining experience or individuals unfamiliar with their local and federal firearms manufacturing laws. It requires access to a vise, a drill press or router, and specific drill bits, which are detailed in our guide on Best Drill Bits for Polymer Frame Modifications. Anyone seeking a complete, ready-to-use firearm should purchase a serialized frame from a licensed dealer.
What's in the box?
The kit contains one 80% polymer frame blank, one precision-machined aluminum jig, one rear rail module, and three drill bits (3mm, 4mm, and 6mm). It does not include the necessary locking block, pins, or slide completion parts, which must be sourced separately. Count all components before beginning work to ensure nothing is missing from the manufacturing process.
Is the Polymer80 PF940v2™ worth it at $220.99?
At $220.99, its value is contingent on a user's desire for a specific custom fit and the satisfaction of fabrication, as serialized complete frames often start near $150. The cost covers the specialized jig tooling, which is reusable. For builders who will perform multiple projects, this amortizes the tooling cost, but for a single build, the economics favor a finished part.
Specs at a glance
Video review
Pros & cons
What works
- Pre-machined aluminum jig ensures pin hole alignment within a 0.005" tolerance.
- Frame weight of 10.8 oz is standard for polymer large-frame designs.
- Accepts all common Gen 3 Glock 17 aftermarket slides and barrels.
Trade-offs
- Requires purchasing a separate locking block and all pins, adding $40-60 to total cost.
- Front rail channel milling is critical; misalignment by more than 0.5mm can cause slide binding.
- No stippling or texture is pre-installed, requiring an additional finishing step for grip.
Expert review
Key attributes
| Caliber Compatibility | 9mm, .40 S&W, .357 SIG |
| Compatible Models | Glock 17/22/24/31/34/35 (Gen 3) |
| Frame Material | Polymer |
| Jig Material | Aluminum |
| Finish | Unfinished Black Polymer |
| Status | Production Discontinued |
Frequently asked questions
- Is it compatible with Glock 19 slides?
- No. The PF940v2 full-size frame is only compatible with large-frame Glock slides like the Glock 17, 22, 34, and 35. For compact models like the Glock 19, you would need the PF940Cv1 frame model.
- Does it fit Gen 4 or Gen 5 Glock parts?
- It is designed for Gen 3 Glock parts compatibility. Gen 4 and Gen 5 parts, particularly the recoil spring assembly and slide lock spring, will not fit without significant modification that is not recommended.
- What drill bit size is needed for the pin holes?
- The three main pin holes require a precise 4mm (5/32”) drill bit. The kit includes one, but having a spare high-speed steel or cobalt bit from a supplier like McMaster-Carr is advised for clean holes.
- Can I return it if I make a mistake during milling?
- No. Once any machining work has begun on the frame or jig, the product cannot be returned or exchanged. This is standard policy for all 80% products due to their nature.
- Does this work with aftermarket trigger connectors?
- Yes, it accepts any aftermarket trigger connector designed for a Gen 3 Glock large-frame model. Installation follows standard procedures, but final fit may require minor fitting of the rear rail module.