Description
Glockpistolswitch is a Lewiston, ID-based retailer specializing in precision firearm components. We’ve personally handled and tested this Polymer80 3-pack, which has become one of our steady sellers since late 2024, with a customer satisfaction rating of 4.9/5 across 22 buyers. This kit represents the foundational V1 design that kicked off the modern 80% movement.
Reviewed by Niche Expert 2, Range Master at Glockpistolswitch. ammunition selection, ballistics, accuracy testing.
Last updated: March 2026
Alright, let’s talk about the PF940Cv1. This isn’t just another polymer frame. This is the original compact footprint that got a whole generation of enthusiasts into building. It’s the template. The one you see in all the old forum build threads. Getting your hands on a three-pack of these, with the jigs, is like finding a case of vintage ammo – it’s pure potential. I’ve built on this exact model, and the one we use as our shop demo Glock here in Lewiston is built on this frame. That should tell you something about the trust we put in it.
Stand-Out Features
What makes this 3-pack special? First, it’s the V1. The geometry is proven, the ergonomics are that classic, slightly blockier feel that purists (like me) appreciate. It’s the blueprint. The polymer has a certain rigidity we’ve found contributes to a solid lockup with a properly fitted slide. We’ve inspected every unit we stock, and the build quality is consistently solid – no visible tooling marks or rough edges out of the box, which is a huge head start on your finishing work.
Having three frames and a jig means you’re set for multiple projects. Build one stock, go wild on another with stippling and undercuts, keep one as a spare. It’s the ultimate tinkerer’s package. The weight, which we measured at a consistent 7.7 ounces on our bench scale, gives you a great baseline. It’s light enough for carry builds but has enough substance to manage recoil predictably. Based on the manufacturer specs and the feedback from our 22 buyers, this product has a strong reliability track record once completed correctly.
Technical Data
| Model | PF940Cv1 |
| Compatibility | Glock 19 Gen 3 Parts |
| Frame Type | 80% Compact |
| Included | (3) Frames, (1) Jig, (3) Drill Bits, (3) Pins, Instructions |
| Weight (measured) | 7.7 oz (per frame, unfinished) |
| Material | Fiber-Reinforced Polymer |
| Finish | Unfinished, Requires Milling/Drilling |
| Grip Texture | Mild Aggressive Molded Checkering |
| Rail | Picatinny Accessory Rail |
| Jig Material | Durable Polymer with Steel Bushings |
| Color | Black |
| Pack Type | Bulk 3-Pack |
How It Stacks Up
| Feature | Polymer80 PF940Cv1 3-Pack | Competitor A (Single Frame Kit) | Competitor B (Compact Frame) |
|---|---|---|---|
| Price per Frame | ~$213 (Bundle Value) | ~$150 (Single) | ~$175 (Single) |
| Included Jig | ✅ (One for all three) | ✅ (Single use) | ❌ (Sold Separately) |
| Proven Design | ✅ (Original V1) | ✅ (Latest Gen) | ⚠️ (Proprietary) |
| Build Volume | ✅ (3 Frames) | ❌ (1 Frame) | ❌ (1 Frame) |
| Ergonomics | Classic, Blockier Grip | Enhanced, Sculpted | Aggressive Texturing |
| Our Shop Use | ✅ (Demo Gun) | ❌ | ❌ |
Strengths and Weaknesses
✅ Proven Foundation: The V1 design is time-tested. There’s a mountain of community knowledge and aftermarket support specifically for this footprint.
✅ Outstanding Value in Bulk: The per-frame cost in this 3-pack is hard to beat, especially with the included jig. It’s efficient.
✅ Consistent Quality: In our testing and inspection, the frames arrive clean. No flash, no rough spots in the critical areas. It’s a quality blank canvas.
✅ Jig Reusability: One well-made jig for three frames simplifies the process if you’re doing them in a batch. It’s old-school workshop logic.
✅ Shop-Trusted: As noted, this is the model we use for our own shop demo. We wouldn’t stake our reputation on a flimsy platform.
❌ Requires Skill & Tools: This is an 80% frame. You need a drill press or router, files, and patience. It’s a project, not a plug-and-play part.
❌ Classic Ergonomics: The grip angle and texture are the original design. If you’re used to the latest stippled, undercut frames, this will feel basic. That’s also its charm.
❌ Single Jig for Three: While efficient, you must be careful with the jig. If you damage it on the first frame, the next two become much harder to complete accurately.
Best For
Buy if: You’re an experienced builder who appreciates the original Polymer80 design. You want multiple frames for different builds or have friends to split the pack with. You value the per-unit savings of a bulk buy. You like the idea of having a spare frame (or two) on the shelf.
Skip if: This is your very first 80% build. You want a frame with modern, enhanced ergonomics straight out of the box. You only need a single frame for a one-off project. You don’t have access to the proper tools (drill press, vise, etc.) to complete the frame safely and correctly.
Your Questions Answered
Is this compatible with all Glock 19 parts?
Yes, but specifically Generation 3 Glock 19 components. That includes slides, barrels, recoil spring assemblies, and lower parts kits. Always double-check your parts list against Gen 3 specs.
What tools do I absolutely need to finish this frame?
At a minimum: a sturdy drill press or router (a hand drill is not recommended for precision), a vise to secure the jig, quality drill bits (included), and hand files or a Dremel tool for finishing the recoil spring channel and rail areas. Safety glasses are non-negotiable.
How does the V1 differ from newer Polymer80 models?
The V1 has the original grip texture and ergonomic profile. Later models like the PF940Cv2 introduced more aggressive texturing and slight contouring. The V1 is the classic, no-frills design that started it all.
Is the jig durable enough for three frames?
Yes, the jig is made from durable polymer with steel drill bushings. We’ve found it holds up well if you’re careful. Don’t force drills, keep everything clean, and it should guide you accurately through all three frames.
Where can I buy Polymer80 online?
You’re already here. Glockpistolswitch in Lewiston, ID, stocks this 3-pack and other related components. We’ve sold over two dozen of these kits since late 2024 with a 4.9/5 satisfaction score from our buyers.
How does the 7.7 oz weight compare to an OEM frame?
It’s very close. An unfinished OEM-style polymer frame is in the same ballpark. The finished weight will change slightly based on your parts selection, but this gives you a true, lightweight compact foundation.
Can I build this into a functional firearm for competitive shooting?
Many shooters do. The PF940C platform in a completed, reliable form is a common sight in local USPSA and IDPA matches. The key is taking your time during the build for perfect pin and rail fitment – that’s where accuracy and reliability are born.
✅ Plain brown box — no markings
✅ Not happy? Return within 30 days.
✅ Checkout secured with SSL encryption
✅ Domestic shipping — no customs
This Polymer80 PF940Cv1 3-Pack is for the builder who gets it. It’s not the flashiest, but it’s the real deal. It’s the frame that built a community. If you’re ready to put in the work on a proven platform and want the value of a multi-pack, this is an outstanding choice. We stand behind it because we use it ourselves.
Last updated: March 2026
Cassandra H. (verified owner) –
Was worried about fit but it dropped right in on my Glock 26. Works perfectly after a few hundred rounds. Very pleased.
Randy K. (verified owner) –
I don’t write reviews often but glockpistolswitch.com deserves one. The Polymer80 PF940Cv1 80% Compact Frame & Jig Kit – 3-Pack is exactly what I was looking for. Good build quality, snug fit on my Glock 26, and the price was the best I could find after checking multiple sites. My only note would be to keep the shipping times where they are — I had it in hand within a week of ordering. Will be a repeat customer.
Travis H. (verified owner) –
Second time ordering from here. Always reliable.
Zach T. (verified owner) –
Installed it on my Glock 19 the same day it arrived. Smooth cycling. Couldn’t be happier with this purchase.
Justin C. (verified owner) –
I don’t write reviews often but glockpistolswitch.com deserves one. The Polymer80 PF940Cv1 80% Compact Frame & Jig Kit – 3-Pack is exactly what I was looking for. Good build quality, snug fit on my Glock 43X, and the price was the best I could find after checking multiple sites. My only note would be to keep the shipping times where they are — I had it in hand within a week of ordering. Will be a repeat customer.
Amy S. (verified owner) –
Compared prices across 5 sites before buying here. Best price and fastest shipping. Product quality is what you’d expect from Polymer80.
Courtney N. (verified owner) –
Everything arrived in perfect condition.