polymer 80 glock 19 - polymer 80
Pros & cons
What works
- Weighs 9.8 oz (278g) as-shipped — provides a lightweight base for final build.
- Includes a proprietary, hardened steel locking block — one less vendor-specific part to source separately.
- Jig is designed for a standard 3/8" drill press vise — reduces setup time compared to universal jigs.
Trade-offs
- No stippling pre-installed — requires a separate stippling step adding $40-80 in tooling or service costs.
- Requires separate purchase of 3mm and 4mm drill bits — adds $15-30 to total project cost.
- Pre-machined rail channels may still need 0.5-1.0mm of final fitting for slide fit — adds 30 minutes of hand-fitting time.
Video review
Expert review
Specs at a glance
About this product
What is the Polymer 80 Glock 19? It is an 80% polymer handgun frame sold as a component, which requires final machining, drilling, and finishing by the end-user to create a functional firearm frame for a Glock 19 Gen3 platform. This product is designed for experienced builders undertaking a custom project. Due to its incomplete status, assembly requires specific tools and technical knowledge.
What is the Polymer 80 Glock 19 used for?
The Polymer 80 Glock 19 - Polymer 80 is used to build a custom Glock 19-pattern pistol. It serves as the foundational polymer frame, which the builder must complete to their specifications before installing OEM or aftermarket slide assemblies and internal components. This is a project for someone familiar with gunsmithing procedures on polymer, specifically requiring precise drilling of 3 pin holes and careful rail channel milling.
How does the Polymer 80 Glock 19 compare to the 80% Lower Fire/Safe Marked - Anodized Black?
The Polymer 80 Glock 19 is better for building a compact 9mm pistol, while the 80% Lower Fire/Safe Marked - Anodized Black is better for building a rifle-caliber AR-15. The Glock 19 frame is a proprietary polymer chassis, measuring 186mm in total length, while the AR-15 lower is a forged aluminum receiver blank. This distinction determines the platform and required completion tools.
What does it weigh and what are the dimensions?
This incomplete Polymer 80 Glock 19 frame weighs approximately 9.8 ounces (278 grams) as-shipped. Its rough dimensions are 186mm in length, 32mm in width at the widest rail point, and 124mm in height from the base of the grip to the top of the rear rail section. Final dimensions and weight will vary after the 2-3 hour finishing process removes excess polymer.
Who is this NOT for?
This product is not for first-time builders or anyone uncomfortable with precise power tool work. It requires a drill press or router, specific drill bits as documented in our guide on Best Drill Bits for Polymer Frame Modifications, and an understanding of state compliance laws. If you seek a drop-in, ready-to-use component, consider a serialized, finished frame instead.
What's in the box?
The complete kit includes the Polymer 80 G19 80% frame, a 3-pin drill jig, and one proprietary locking block. It does not include drill bits, a drill press, or any firearm parts like a slide, barrel, or LPK (Lower Parts Kit). The jig is designed for use with a standard 3/8" drill press vise and requires separate purchase of 3mm and 4mm drill bits for the pin holes and channel.
Is the Polymer 80 Glock 19 worth it at $700?
At $700, its value is contingent on your technical skill and local regulatory environment. Given this is a final-sale, discontinued product at a premium, it is only worth the investment if you specifically require this exact model and possess the equipment to complete it successfully. For builders needing a more accessible starting point, our Polymer80 80% Lower Receiver and Jig Kit (LR-308) may offer better value for a different platform.
Key attributes
| Caliber | Designed for 9x19mm |
| Frame Material | Proprietary polymer |
| Compatible Platform | Glock 19 Gen 3 |
| Condition | 80% Complete (Requires Machining) |
| Rough Weight | 9.8 oz (278 g) |
| Rough Length | 186 mm |
| Included | Frame, Jig, Locking Block |
| Finish | Unfinished, Molded Polymer |
Frequently asked questions
- Is it compatible with a Glock 19 Gen 5 slide?
- No, it is not directly compatible. The Polymer 80 G19 frame is designed specifically for Glock 19 Gen 3 internal components and slide assemblies. Using a Gen 5 slide would require incompatible internal parts and may not lock up correctly on the frame rails.
- Does it fit standard Glock 19 holsters?
- Generally, no—not until after final finishing. The unfinished frame has excess polymer webbing and rough dimensions that prevent holster fit. Once properly milled and finished to spec, the external profile matches a standard G19 frame and should fit most Gen 3-specific holsters.
- How long does final machining take?
- The physical machining process for a skilled builder takes approximately 2 to 3 hours with the correct tools. This includes jig setup, drilling the five required holes (three pin holes and two frame rail holes), and milling the channel to a precise depth of 5.0mm. Rushing this process risks damaging the frame.
- Can I return it if my drill holes are misaligned?
- No, this product is sold as a final sale with no returns, especially after any machining work has begun. Misaligned holes from user error will render the frame non-functional. We strongly recommend practicing on polymer scraps and consulting our technical guides before beginning.