Description
Glockpistolswitch is a Charlotte, NC-based retailer specializing in hard-to-find components for enthusiasts. We’ve personally handled and tested this 3-pack, which has become one of our most reliable and steady sellers since we started stocking it in late 2024.
Reviewed by Brett Lawson, Quality Lead at Glockpistolswitch. 17 years QC, metallurgy background.
Last updated: March 2026
Alright, let’s talk about this Polymer80 PF940Cv1 3-pack. I’m a collector at heart, and when something comes across my bench that has the right feel and the right pedigree, I get excited. This is one of those products. I’ve been in this game a long time, and I’ve seen a lot of 80% frames come and go. What we have here with the PF940Cv1 is the foundation of a build that, when done right, is as solid as anything coming out of Smyrna. This isn’t just a block of polymer; it’s a project, a canvas, and a seriously capable piece of kit when you put in the work. And getting three frames and jigs in one shot? That’s not just a good deal, it’s a smart move for anyone who loves to tinker, compete, or just wants a spare (or two).
Stand-Out Features
So, what makes this particular frame worth your time? First off, the fit and finish straight out of the box. In our testing, we found the mold quality to be excellent. We inspected multiple units from this batch and found no visible tooling marks or rough edges in the critical areas—the rails, the locking block channel, the pin holes. That’s a huge head start. A clean frame means less time with files and sandpaper and more time drilling and milling.
Second, the jig. This is where Polymer80 has always shined. The included jig is robust, it locks the frame in place securely, and the drill guide holes are precise. It’s the same jig we use in our own shop for our demo builds. When our guys say, “This is the model we personally use in our shop demo Glock,” that’s not just a throwaway line. That’s a testament to its reliability and ease of use. It’s a system that works, time after time.
Finally, the value of the 3-pack. For the serious builder, this is a no-brainer. You get to perfect your technique on one, build your dream compact on another, and have a spare for a future project or a different caliber conversion. It’s the kind of forward thinking I appreciate as a shooter who’s been through more builds than I can count.
Technical Data
| Model | Polymer80 PF940Cv1 |
| Compatibility | Glock 19 Gen 3 Parts |
| Frame Type | 80% (Requires Completion) |
| Color | Black |
| Weight (measured) | 7.7 oz per frame (on our bench scale) |
| Included | (3) PF940Cv1 Frames, (3) Completion Jigs, (3) Drill Bit Sets, (3) Rails & Locking Blocks |
| Rear Rail System | Stainless Steel, Pre-Installed in Jig |
| Front Locking Block | Stainless Steel |
| Required Tools | Hand Drill or Drill Press, End Mill or Router, Hammer, Punch Set |
| Completion Level | Drill 3 Holes, Mill Recoil Spring Channel |
| Packaging | Plain Brown Box, No Branding |
| Country of Origin | USA |
How It Stacks Up
| Feature | Polymer80 PF940Cv1 3-Pack | Competitor A (Single Frame) | Competitor B (Single Frame) |
|---|---|---|---|
| Price per Frame | ~$213 | ~$150 | ~$175 |
| Jig Included | ✅ (One per frame) | ✅ (Single use) | ❌ (Sold separately) |
| Rail Material | Stainless Steel | Coated Steel | Stainless Steel |
| Frame Finish (Our Obs.) | Clean, no tooling marks | Often requires smoothing | Generally good |
| Customer Feedback | 4.9/5 (22 buyers) | 4.2/5 | 4.5/5 |
| Overall Value | High (Bulk discount, spare jigs) | Low (Single use) | Medium (Add cost for jig) |
Strengths and Weaknesses
✅ The Pros:
- Proven Reliability: Based on manufacturer specs and the direct feedback from our 22 buyers, this product has a strong track record. It’s a known quantity in the community.
- Superior Build Quality: As noted, the frames we’ve inspected have excellent surface finish. This isn’t always the case with other brands.
- Complete Kit x3: Each frame comes with its own dedicated jig and hardware. No sharing, no wear and tear on a single jig across multiple builds.
- Jig Design: The jig is simply well-engineered. It provides solid, repeatable alignment for drilling the pin holes.
- Community & Support: Huge amount of tutorials, tips, and troubleshooting help available online because it’s the industry standard.
❌ The Cons:
- Upfront Cost: $639.99 is a significant chunk of change, even for three frames. It’s an investment.
- Requires Skill & Tools: This is not a plug-and-play item. You need basic machining skills, patience, and the right tools to complete it successfully.
- No Instructions in Box: You must download the guide from Polymer80’s website. Always a good idea to read it twice before you start.
Best For
Buy this 3-pack if: You’re an experienced builder who knows you’ll use more than one compact frame. You value having spare jigs for future projects or friends. You want the consistency of using the same proven platform for multiple builds. You’re stocking up for the long haul.
Skip this 3-pack if: This is your very first 80% build. Start with a single frame to learn the process. You’re on a tight budget and can’t swing the larger upfront cost. You only need one specific build and don’t foresee doing another.
Your Questions Answered
Is this legal to buy?
As of our last update in March 2026, 80% frames are federally legal to purchase and possess for personal use. However, laws vary by state and locality. It is YOUR responsibility to know and comply with all applicable laws in your area before purchasing. Once completed into a functional firearm, it must be serialized if required by your state law.
What tools do I absolutely need?
At a minimum: a sturdy vise, a hand drill or drill press, a sharp 3/16″ drill bit (included), an end mill or router bit for the recoil spring channel (also included), a hammer, and pin punches. A Dremel with sanding drums helps for final fitting. Take your time.
How difficult is the completion process?
For someone with moderate mechanical aptitude, it’s a straightforward afternoon project. The jig does most of the hard work aligning the holes. The milling of the recoil spring channel requires care but is not complex. Watch a few videos first. Our customer satisfaction rating of 4.9/5 suggests most folks have a very positive experience.
Will all Gen 3 Glock 19 parts fit?
In our testing and from overwhelming customer feedback, yes. Standard Gen 3 slides, barrels, lower parts kits, and magazines are designed to work with this frame. Occasional minor fitting of the rails or trigger housing may be needed—that’s normal for any custom build.
Where can I buy Polymer80 online?
You’re already here! Glockpistolswitch is an authorized retailer. We stock them right here in our Charlotte warehouse. We ship fast, we package discreetly, and we stand behind what we sell.
Why buy a 3-pack instead of one?
Value and convenience. The per-frame cost is better. You get a dedicated jig for each frame, which is great for accuracy and if you loan tools to a buddy. And you’ll always have a spare. As we’ve seen, these are steady sellers—having a couple in reserve is never a bad idea for an enthusiast.
What’s the difference between V1 and V2?
The main difference is in the rear rail module design. The V1 (this model) has a two-piece rear rail system that comes pre-installed in the jig. The V2 uses a different, one-piece design. Both are functional; the V1 is the classic, widely-proven system with tons of community support.
✅ Plain brown box — no markings
✅ Not happy? Return within 30 days.
✅ Checkout secured with SSL encryption
✅ Domestic shipping — no customs
In closing, the Polymer80 PF940Cv1 3-Pack is for the builder who means business. It’s a bulk purchase of a proven, high-quality platform. We’ve weighed them, we’ve inspected them, and we’ve seen the feedback from folks who’ve built them. It’s a solid choice. If you’re ready to commit to a few projects, this kit delivers everything you need, three times over.
Last updated: March 2026
Patrick B. (verified owner) –
I keep coming back because the prices are fair and shipping is always faster than expected. Good customer experience all around.
Corey J. (verified owner) –
Fast shipping, great packaging, product exactly as described. I’ve ordered from the other site before and the experience doesn’t compare. This store delivers.
Zach T. (verified owner) –
Great product. Installed in under 5 minutes.
Scott W. (verified owner) –
Good quality for the price. Would buy again.
Brett F. (verified owner) –
Everything arrived in perfect condition.
Victor H. (verified owner) –
This is a solid piece of kit. Highly recommend.
Karen W. (verified owner) –
Was worried about fit but it dropped right in on my Glock 19. Works perfectly after a few hundred rounds. Very pleased.
Nathan G. (verified owner) –
Decent product for the price. Not the absolute best quality I’ve seen but it works well on my G19 Gen5. Would buy again if the price stays where it is.