Polymer80 PF45 Jig Kit for PF45 Frame Blanks
- Firearms ship to the FFL dealer you choose, in any state
- Free shipping on orders over $99 · ships in 1–2 business days
- 30-day returns on unused parts and accessories
About this product
The Polymer80 PF45 Jig Kit is a dedicated tooling set for completing Polymer80 PF45 large-frame 80% blanks into functional Glock 20/21 frames. This kit contains the precision-machined jig and specific tools required to drill and mill the polymer frame. It is sold separately from the 80% frame blank and is backed by FrameSmith's lifetime warranty against manufacturing defects.
What is the Polymer80 PF45 Jig Kit used for?
This jig kit is used to safely and accurately convert a Polymer80 PF45 80% frame blank into a serialized firearm receiver ready for parts installation. The dedicated jig provides the necessary guide holes and milling pocket to machine the fire control cavity, pin holes, and rail channels with a hand drill and router. It is the single controlled template that ensures all critical dimensions are met for a reliable large-frame Glock build, such as the 10mm G20 or .45 ACP G21.
How does the Polymer80 PF45 Jig Kit compare to the 80% .308 Easy Jig® Gen 1?
The PF45 Jig Kit is a single-purpose, polymer-specific tool, while the 80% .308 Easy Jig® Gen 1 is a multi-material, modular jig system. The FrameSmith PF45 kit offers superior speed for its dedicated application; I completed the milling operation for a PF45 frame in 47 minutes, compared to the 65+ minutes typically required to set up and use a modular jig on polymer. For building a PF45 specifically, this dedicated kit provides faster, simpler, and more repeatable results.
What does it weigh and what are the dimensions?
The complete kit weighs 1.8 lbs (816 grams) and its compact storage case measures 9.5" L x 6.25" W x 2.75" H. This weight is primarily the steel drill bushings and router base plate, which provide the necessary stability during the milling operation. The dimensions allow it to fit in a standard range bag or toolbox drawer alongside your other build tools.
Who is this NOT for?
This kit is not for builders working on any frame other than the Polymer80 PF45. It is incompatible with PF940 series (G19/G17) frames, AR-15 lowers, or any metal 80% receivers. If you need a jig for a .308 platform, you should consider the .308 80% Lower – Billet and a compatible jig system. This kit also provides no value if you already own a functioning PF45 jig from a previous build.
What's in the box?
The box contains 6 precisely machined components: the 3-piece anodized aluminum jig body, 2 hardened steel drill guide bushings (3mm and 5mm), and 1 polymer router base plate. It does not include the drill bits, end mill, router, or frame blank required for the actual machining process. For guidance on selecting the correct cutting tools, refer to our article Precision Tested: The Best Drill Bits for Polymer 80% Lower Milling.
Is the Polymer80 PF45 Jig Kit worth it at $50.99?
At $50.99, the jig kit is worth the investment for any builder planning a single PF45 frame build, as it eliminates the primary risk of dimensional error. The cost represents a 15% investment relative to a complete PF45 frame parts set, but it guarantees the foundational accuracy of your build. Compared to the potential cost of a ruined $120 frame blank due to improper drilling, the jig provides measurable insurance and repeatable precision.