Overview
The G80 Polymer Jig is built on the same rugged use philosophy as our premium aluminum jig. Same accuracy, same rigidity, same build after build reusability, at a much lower price.
The savings come from injection molding the body, not from cutting corners where your holes get decided. Integrated precision steel drill bushings guide every cut, and precision fit steel dowel pins secure the receiver tightly to the jig so nothing shifts while you work.
Unlike previous polymer jigs for the pistol builder market, this one is built to last and built to be put to work. Finish a receiver, then finish the next one with the same jig.
The Polymer Jig is a manual jig. It is for use with the G80 Unfinished Receiver Glock-type Fire Control Unit and a standard rotary tool. It does not work on the Ghost Gunner 3.
Features
Molding the body is what brings the price down. It also gives us a rigid, dimensionally stable frame, so the geometry you start with is the geometry you finish with
Steel bushings are set into the body at every drill location, so your bit rides on hardened steel instead of plastic. That is what keeps hole placement accurate across repeated builds
Steel dowel pins secure the receiver tightly to the jig. No slop, no creep, no chasing a hole that walked mid-cut
Not a one and done throwaway. The jig holds its accuracy over repeated builds, so the second receiver you finish costs you nothing in tooling
The rotary tool collet, drill bits, and grinding media ship in the box. Nothing to source before you start
The polymer body conducts far less heat than aluminum, so the jig stays comfortable in the hand through a long session at the rotary tool
In the Box
- 1x G80 Polymer Jig
- 1x 3mm Rotary Tool Collet
- 1x #31 High Speed Steel Drill Bit
- 1x #21 High Speed Steel Drill Bit
- 1x Blue Corundum Grinding Drum
- 1x Blue Corundum Grinding Cone
G80 Polymer Jig FAQ
The difference is how the body is made, not how the jig works. The aluminum jig is machined from billet; the polymer jig is injection molded with precision steel drill bushings embedded at every drill location. You get the same drill accuracy, rigidity, and multi-build reusability for much less money. The tradeoff is workflow: the Polymer Jig is a manual jig only, while the aluminum G80 Jig is also offered in a Machine configuration for the Ghost Gunner GG3-S.
It is built for repeated use. Most polymer jigs bundled with cheap 80 percent pistol kits are disposable and lose accuracy after a single build, because the drill guides are plastic and wear out. Here the wear is carried by embedded steel bushings instead, so the jig holds its tolerances build after build.
A rotary tool such as a Dremel, plus the tooling that ships in the box: a 3mm rotary tool collet, a #31 high speed steel drill bit, a #21 high speed steel drill bit, a blue corundum grinding drum, and a blue corundum grinding cone. There is nothing else to source before you start.
No. This jig does not work on the Ghost Gunner 3. If you are finishing on a Ghost Gunner GG3-S, use the aluminum G80 Jig in the Machine configuration instead.
No. The G80 Polymer Jig is engineered exclusively for the G80 Unfinished Receiver, a heat-treated steel fire control unit rather than a polymer frame. Universal jigs are where fit issues, walk, and misalignment come from. This one is cut for one part and drops straight onto it.
Injection molding a body costs far less per unit than machining one from billet aluminum, and that is where the savings come from. What did not change is the part of the jig that decides where your holes end up: the embedded steel drill bushings and the precision fit steel dowel pins that hold the receiver. You give up the metal body and the Machine (GG3-S) workflow, not the accuracy.
Most builders finish a G80 Unfinished Receiver in 1-2 hours using manual tools. The jig is designed so that time goes into cutting rather than into setup and troubleshooting. That completion time is also part of what keeps the G80 system inside the federal guidelines established in the VanDerStok decision.
The G80 system was designed to comply with federal law as interpreted by the Supreme Court in the VanDerStok decision. The majority ruled that kits shipped without every necessary component, requiring uncommon tools and over an hour to complete, are not subject to the ATF’s 2022 receiver rule. However, some states have banned privately made firearms (PMFs), and G80 does not ship to those restricted states. Always verify your local laws before purchasing any 80 percent kit.
![G80 Build Kit [Polymer]](https://g80dotcom.s3.us-east-2.amazonaws.com/wp-content/uploads/2026/04/G80-IM-Build-Kit-275x206.png)
