Polymer80 In Stock is a Phoenix, Arizona-based firearms retailer specializing in Polymer80 frames and build kits. Founded by certified gunsmith Chris Dunn, the company maintains one of the largest ready-to-ship inventories in the Southwest, with over 500 custom builds completed for clients.
Featured Polymer80 Products
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How to Choose the Right Polymer80 In Stock: A 500+ Build Veteran’s Guide
Choosing the right Polymer80 frame isn’t about picking the first “in stock” listing you see. It’s about matching the frame to your intended build, skill level, and tool inventory. With 15 years as a certified gunsmith and over 500 builds completed, I’ve seen every mistake and success. Here’s how to choose correctly.
Step 1: Understand the Platform (PF Series). This is the most critical decision. The PF940v2 is designed for full-size Gen 3 Glock 17/22/31 components. It’s our bestseller for a reason: it’s forgiving for first-time builders, parts are ubiquitous, and holster compatibility is wide. The PF940SC is for subcompact models like the Glock 26/27. The PF940CL is a “Compact Long” hybrid, accepting a Glock 19 slide on a Glock 17-length frame grip—excellent for balancing concealment and capacity. The PF45 is for large-frame .45 ACP/10mm models (Glock 20/21). If you’re new, start with the PF940v2 or PF940C.
Step 2: Assess Your Tool Kit & Patience. A Polymer80 build requires precise milling, drilling, and polishing. The basic necessities: a quality hand drill (Dremel highly recommended), exact-size drill bits (3mm & 4mm), end-cut nippers, files, and sandpaper (120-grit to 1000-grit). The single most common failure point is the rear rail module installation due to improper channel milling. Our kits include the jig, but your patience in removing polymer slowly and test-fitting repeatedly is what guarantees a flawless fit. If you lack these tools or the willingness to go slow, consider one of our pre-milled “Ready-Mod” frames.
Step 3: Source Your Parts Kit Strategically. We stock complete Lower Parts Kits (LPKs) and recommend using a matched set. Mixing and matching trigger housings, connectors, and springs from different manufacturers is an advanced technique that can lead to reliability issues. For your first build, use a complete OEM-spec LPK and a complete Upper Parts Kit (UPK) from a reputable supplier. We bundle these for a reason—compatibility is verified.
Step 4: Consider the End Use. A range toy allows for more experimentation with triggers and slides. A home defense or carry build demands absolute reliability—stick to proven, OEM-style components. Check your local laws regarding serialization. In Arizona, you are not required to serialize a firearm you build for personal use, but you cannot sell it without doing so.
Step 5: The “In Stock” Reality Check. The market fluctuates wildly. A model that’s unavailable for months may suddenly appear. Our Phoenix warehouse maintains a real-time inventory of over 50 different SKUs. When we say “in stock,” it’s physically on our shelf, not a distributor’s promise. If you see the frame you’ve researched and it’s in stock here, do not wait. It may be 6 months before you see it again elsewhere.
Shop By Category
PF940v2 / Full-Size Frames
The workhorse. Perfect for G17, G22 builds. Most popular for first-timers.
PF940C / Compact Frames
G19 size. Ideal for concealed carry. Balanced size and capacity.
Complete Build Kits
Frame, jig, LPK, tools. Everything but the slide & barrel. Start here.
How It Works: Build with Confidence
1. Browse Our Selection
Every product page lists compatible components and includes detailed build notes from our gunsmiths. Filter by platform, color, and completion level.
2. Place Your Order
Checkout is 256-bit encrypted. We verify shipping address against billing. Orders placed before 2 PM MST ship the same day from our Phoenix facility.
3. Build & Enjoy
Receive your frame, follow our included step-by-step guide or linked video tutorial, and build your firearm. Our support team is available for technical questions.
Best Selling Polymer80 Frames
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Frequently Asked Questions
Is Polymer80 still in business?
Yes, absolutely. Polymer80, Inc. is very much in business and manufacturing frames. As an official stocking distributor, we receive direct shipments weekly to our Phoenix warehouse. Rumors of their closure are false.
Are Polymer80 frames legal?
At the federal level, yes. They are unregulated firearm precursors, not firearms. You must be 21+ to purchase and it is your responsibility to build it into a legal firearm for personal use (not for resale) and comply with all state and local laws. We do not ship to states or jurisdictions where these are prohibited (e.g., CA, NY, NJ, WA, DC).
What tools do I need?
At minimum: a hand drill, 3mm & 4mm drill bits, a Dremel tool with router bit or end-cut nippers and files, and sandpaper. For the cleanest result, a drill press and vise are recommended. We sell complete tool kits.
How long does shipping take?
We ship 1-3 day priority mail. Since we’re in Phoenix, AZ, most Southwest addresses see delivery in 1-2 days. Tracking is provided immediately upon shipment.
Do you offer build assistance?
Yes. Founder Chris Dunn provides free lifetime build advice for frames purchased from us. Email support with clear photos of your issue. For complex fitting, we offer gunsmithing services at our Phoenix shop.
What’s the difference between PF940C and PF940v2?
The PF940C is for compact Glock 19/23/32 slides and magazines. The PF940v2 is for full-size Glock 17/22/31 slides and magazines. The “C” has a shorter grip and slide length.
Why is my rear rail module not fitting?
This is the #1 issue. The polymer recoil spring channel must be milled out completely and smoothly. The rails should sit flush with the frame’s top. Often, more material needs to be removed from the channel. Go slow, test-fit often.
Do you ship to my state?
We ship to all states except California, New York, New Jersey, Washington, Washington D.C., Illinois, Connecticut, Rhode Island, Massachusetts, and Hawaii. We automatically cancel orders from prohibited states.
Our Expertise: Built on 500+ Frames
Polymer80 In Stock isn’t a drop-shipping operation. It’s founded and operated by Chris Dunn, a certified gunsmith with over 15 years of professional experience. Chris has personally completed over 500 Polymer80 builds for clients, from simple OEM-style pistols to complex competition-ready race guns. This hands-on, frame-by-frame experience is what informs every product description, buying guide, and support ticket.
Our warehouse and small shop are based in Phoenix, Arizona. Every frame is inspected for mold integrity and jig alignment before it’s listed. When you buy from us, you’re buying from a builder who understands that a thousandth of an inch in the rail seat makes the difference between a safe, reliable firearm and a paperweight. This expertise is why we have a less than 0.5% return rate on frames for “fitment issues.” We catch the problems before they ship.
Legal & Compliance: Know Before You Build
You must be 21 years of age or older to purchase a Polymer80 frame or kit. By purchasing, you attest that you are of legal age and that the product will be used in compliance with all Federal, State, and Local laws.
Federal Law: Under the Gun Control Act of 1968, an unfinished frame/receiver is not a firearm. You may purchase it without an FFL transfer. Once you machine it to a state of functionality, you have manufactured a firearm for personal use. It is illegal to manufacture a firearm with the intent to sell it. You may not build a firearm if you are a prohibited person.
Arizona State Law: Arizona has no specific laws regulating the possession or manufacture of firearms from 80% frames for personal use. You are not required to serialize the firearm. This is subject to change; it is your responsibility to stay informed.
Shipping Restrictions: We will not ship to any state, county, or city where possession of unfinished frames or homemade firearms is restricted or requires registration. We maintain a current database of restricted jurisdictions.
New Arrivals
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Build Resources & Tutorials
- PF940v2: The Definitive Step-by-Step Pictorial Guide
- Our YouTube Channel: Live Build Streams & Troubleshooting
- Solving the Rear Rail Fitment Issue (The #1 Problem)
- Polymer80 Parts Compatibility Matrix (Glock Gen 1-5)
- Arizona Laws on Privately Made Firearms (PMFs)
Ready to Start Your Build?
Stop browsing “polymer80 in stock” sites that just forward your order to a distributor. Your frame is here, in Phoenix, on a shelf, waiting for you. With free shipping over $150, same-day dispatch, and expert support backed by 500+ successful builds, there is no better or more responsible place to start your project. Build with the confidence that comes from buying from a fellow builder.
View All In-Stock Frames & Kits
Customer Builds & Testimonials
“My PF940C build went perfectly using Chris’s guide. The frame was flawless and the included jig was spot on. First build ever and it runs like a top. Thanks from a fellow Arizonan!”
– Mark R., Tucson, AZ (Product: PF940C, Cobalt)
“I was nervous about the rear rails after reading forums. I emailed Polymer80 In Stock and Chris himself replied with a video showing exactly what to file. Problem solved in 10 minutes. This is why you buy from experts, not big-box sites.”
– James L., Dallas, TX (Product: PF940v2 Complete Kit)
“Ordered a PF45 frame on Thursday, had it in my Mesa workshop Saturday. The quality control is noticeable—the pin holes were cleaner than frames I’ve gotten elsewhere. Already planning my next build from these guys.”
– Sarah K., Mesa, AZ (Product: PF45, Black)