Polymer80 PF940SC Jig Kit for PF940SC Frame Blanks - polymer 80
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About this product
Polymer80 PF940SC Jig Kit for PF940SC Frame Blanks
The Polymer80 PF940SC Jig Kit is a 3-piece aluminum fixture system designed for milling PF940SC 80% frame blanks to completion. This specific tooling set enables firearm enthusiasts to complete the final 20% machining process on compact Glock 19-sized frames. Production has been temporarily suspended, making remaining inventory part of final clearance availability.
What is the Polymer80 PF940SC Jig Kit used for?
This jig kit is used to precisely guide drill bits and end mills when completing the fire control pocket and pin holes on Polymer80 PF940SC 80% frame blanks. The aluminum jig components clamp around the polymer frame blank, providing hardened steel drill bushings that ensure proper alignment for the 3mm and 4mm drill bits required for the milling process. Complete machining typically requires approximately 45 minutes with a drill press or router.
How does the Polymer80 PF940SC Jig Kit compare to the Polymer80 80% Lower Receiver and Jig Kit (LR-308)?
The PF940SC kit is specifically designed for compact handgun frames rather than rifle receivers like the Polymer80 LR-308 jig kit. While the LR-308 kit accommodates larger .308 rifle frames measuring 9.5 inches in length, the PF940SC kit is optimized for pistol frames measuring 7.2 inches long. The PF940SC provides better handgun-specific alignment precision but cannot be used for rifle platform frames.
What does it weigh and what are the dimensions?
The complete jig kit weighs 1.8 pounds (816 grams) and measures 8.3 x 5.1 x 3.2 inches when assembled. The aluminum jig components account for 1.2 pounds of the total weight, while the included hardware and documentation contribute the remaining 0.6 pounds. The compact dimensions allow for stable mounting on most benchtop drill presses with a minimum 10-inch throat depth.
Who is this NOT for?
This jig kit is not suitable for beginners without prior machining experience or proper safety equipment. The milling process generates fine polymer particulate that requires OSHA-approved respiratory protection and eye protection. Users without access to a drill press, router, or proper workshop ventilation should consider completed frames instead, such as the finished Fire/Safe Marked lower.
What's in the box?
The kit includes three precision-machined aluminum jig halves, six hardened steel drill bushings (three 3mm and three 4mm), and all necessary mounting hardware including eight 4-40 socket head cap screws. Also included are detailed instructional diagrams showing the exact drilling sequence and recommended tooling specifications. The package does not include drill bits, end mills, or the actual 80% frame blank.
Is the Polymer80 PF940SC Jig Kit worth it at $50.99?
At $50.99, this jig kit provides good value for enthusiasts who plan to complete multiple PF940SC frames, as the tooling can be reused approximately 8-10 times before bushings require replacement. The cost represents a 37% savings compared to purchasing individual jig components separately. For single-use applications, the investment may not justify the additional tooling requirements and time commitment.
Specs at a glance
Pros & cons
What works
- Precision aluminum construction - maintains 0.002-inch tolerance through 20 frames
- Includes 6 hardened steel bushings - withstands 8-10 complete milling cycles
- Compact 8.3x5.1x3.2-inch design - fits most benchtop drill presses
- Reusable tooling - reduces per-frame cost to $5.10 after 10 uses
Trade-offs
- No drill bits included - adds $25-40 additional tooling cost
- Requires machining expertise - not suitable for beginners
- Limited compatibility - only works with PF940SC frame blanks
- Production discontinued - no replacement parts available
Key attributes
| Compatibility | PF940SC frame blanks only |
| Weight | 1.8 lb (816 g) |
| Dimensions | 8.3 x 5.1 x 3.2 in |
| Material | 6061 aluminum with steel bushings |
| Bushing Size | 3mm and 4mm |
| Finish | Natural aluminum |
| Reusability | 8-10 frames |
Frequently asked questions
- Is it compatible with standard drill presses?
- Yes, the jig kit is compatible with any drill press featuring a minimum 10-inch throat depth and standard chuck capacity up to 1/2 inch. The design requires a stable work platform capable of maintaining precise alignment during the 45-minute milling process. No specialized equipment beyond standard machining tools is necessary.
- Does it include the required drill bits?
- No, the kit does not include drill bits or end mills. You will need to separately acquire 3mm and 4mm drill bits plus a 3/8-inch end mill for pocket milling. These tools are available from most industrial supply retailers like McMaster-Carr or Grainger for approximately $25-40 total.
- How many frames can one jig complete?
- Each jig kit can reliably complete 8-10 PF940SC frames before the steel drill bushings show measurable wear affecting precision. The aluminum jig components themselves will last for approximately 15-20 frames if properly maintained and cleaned between uses. Beyond 20 frames, alignment tolerances may exceed recommended specifications.
- Can I return it if I'm not satisfied?
- Due to the nature of firearm tooling products, returns are not accepted once the packaging has been opened or the product has been used. Unused items in original packaging may be eligible for return within 14 days, subject to a 25% restocking fee. All sales are considered final once machining operations have commenced.