Polymer80 Kits is a Nashville, Tennessee-based firearms retailer specializing in Polymer80 pistol build kits and frames. Founded by certified gunsmith Tyler Banks, the company has successfully facilitated over 500 custom builds for clients across the U.S., focusing on legal, high-quality DIY firearm components.
Top-Selling Polymer80 Kits & Parts
How to Choose the Right Polymer80 Kit: A Nashville Gunsmith’s Guide
Choosing the right Polymer80 kit isn’t just about picking a model; it’s about matching the platform to your intended use, skill level, and local laws. With over 500 builds completed in our Nashville workshop, we see common pitfalls. Here’s our definitive guide.
Step 1: Understand the Core Platform Options. Polymer80 offers distinct series. The PF940v2 is the full-size frame compatible with Glock 17 parts. It’s our top recommendation for first-time builders due to its larger work area and the abundance of aftermarket support. The PF940C is the compact model for Glock 19 parts. It’s the best-selling platform for a reason: perfect balance of concealability and capacity. The PF940SC is the subcompact for Glock 26 builds, ideal for deep concealment but offers a smaller, more challenging milling area. The PF45 is for large-frame .45 ACP/10mm builds (Glock 20/21). This is an advanced builder project due to its unique locking block and parts compatibility nuances.
Step 2: Decide Between a Frame-Only Kit or a Complete Build Kit. A basic kit includes the 80% frame, the patented jig, drill bits, and the necessary end mill or rails. This is for builders who want to source their own lower parts kit (LPK), slide, upper parts kit (UPK), and barrel. Our Complete Build Kits include all of the above—often with upgraded components like threaded barrels or optic-ready slides. For 90% of customers, the complete kit offers the best value and ensures part compatibility, saving an average of 3 hours of research and sourcing.
Step 3: Evaluate Your Tools & Workspace. The minimum tool requirement is a hand drill or drill press, a vise, and a set of quality hex wrenches. However, build quality improves dramatically with the right tools. We strongly recommend a router with a plunge base and a 1/4″ collet for the milling step—it’s faster and yields a cleaner pocket than a hand drill. A small bench vise with polymer jaw pads is essential. You’ll also need a set of precision pin punches (3/32″ and 5/32″ are critical), a nylon or brass gunsmithing hammer, and a set of files for de-burring. Allocate a clean, well-lit workspace. The process generates polymer shavings; a small shop vacuum is handy.
Step 4: Parts Compatibility & Selection. This is where expertise matters. While Polymer80 frames are designed for Gen 3 Glock parts, not all aftermarket parts are created equal. For LPKs, we vet our kits for proper sear engagement and connector geometry. For slides, ensure the channel liner is installed and the firing pin safety plunger moves freely. Barrel fit should be snug but not binding. A common issue we fix is out-of-spec trigger housings causing reset problems. We only stock parts from manufacturers with proven track records in the P80 ecosystem.
Step 5: Consider Your End Goal. Is this a range toy, a home defense firearm, or a concealed carry piece? For carry, reliability is non-negotiable. Stick with proven OEM or high-quality aftermarket internal parts. For a competition or range-focused build, you can explore more aggressive slide cuts, ported barrels, and custom triggers. Remember, the frame is the foundation. A properly milled frame with in-spec rails is the single most important factor in the pistol’s long-term reliability.
Final Pro Tip from Tyler: “Take your time on Step 3 in the jig—drilling the pin holes. Use steady, even pressure. If your holes are true, the rest of the build will fall into place. If they’re off, you’ll fight the entire assembly. We offer free technical support for every kit we sell because we want your first build to be a success, not a frustration.”
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How It Works: Build with Confidence
1. Browse Our Selection
Choose from 40+ curated kits and components. Every product listing includes detailed compatibility notes and difficulty ratings from our gunsmith team.
2. Place Your Order
We ship from Nashville within 1 business day. All kits include the legally required jig and instructions. Free shipping on orders over $150.
3. Build & Enjoy
Follow our detailed video tutorials. Access our free builder support. Complete your firearm for personal use in accordance with all laws.
Customer Favorites: Best Sellers
Frequently Asked Questions
Are Polymer80 kits legal?
Yes. Federal law permits an individual to manufacture a firearm for personal use without serialization, provided it is not for sale or transfer and the individual is not prohibited from owning a firearm. It is the builder’s responsibility to know and comply with all state and local laws. We do not ship to restricted jurisdictions.
What tools do I need to complete a Polymer80 kit?
At minimum: a hand drill or drill press, a vise, a set of hex wrenches, and a hammer. For superior results, we recommend a router with a plunge base (like a DeWalt DWP611), our router jig adapter, a bench vise, pin punches, and files. Our tool kits include these specifics.
How long does it take to build a Polymer80?
For a first-time builder following our tutorials, expect 3-4 hours of careful work. Experienced builders can complete the machining in under an hour. The assembly of parts takes another 30-60 minutes.
Do you offer completed firearms?
No. We sell unfinished frames (80% receivers) and components. The final machining and assembly is performed by you, the end user, creating a firearm for your personal use. This is a key legal distinction.
What’s the difference between the PF940C and PF940v2?
The PF940C is a compact frame compatible with Glock 19 (Gen 3) parts. The PF940v2 is a full-size frame compatible with Glock 17 (Gen 3) parts. The “C” is our most popular for concealed carry; the “v2” is often recommended for first builds due to its size.
Why is my slide not racking smoothly?
The most common causes are: 1) The recoil spring channel needs more milling—it must be flush and smooth. 2) The rail modules may need slight de-burring. 3) The slide lock spring may be sitting too high. Our support team can diagnose this with a photo.
Do your kits include serial numbers?
No. Unfinished frames from Polymer80 do not have serial numbers. If you wish to serialize your firearm after building it, you may do so following ATF guidelines, but it is not federally required for personal use.
What is your return policy?
Due to the nature of these products, all sales are final once the frame or jig has been drilled, milled, or altered. Unaltered items in original packaging may be returned within 30 days for a refund, less a 15% restocking fee. Please contact us before returning.
Our Expertise: Built in Nashville
Polymer80 Kits isn’t a faceless drop-shipper. It’s operated by Tyler Banks, a certified gunsmith with over 15 years of professional experience. Tyler’s background includes machining, metal fabrication, and ballistic training. He has personally completed and function-tested over 500 Polymer80 builds for clients, diagnosing everything from out-of-spec trigger bars to improper rail seating.
This hands-on expertise directly informs our inventory. We don’t just sell parts; we vet them. Every Lower Parts Kit we stock is tested in a control frame for proper sear engagement and reset. Every slide is inspected for proper channel liner installation. This curation process rejects about 5% of incoming components that don’t meet our reliability standards.
Our location in Nashville, TN, places us at the heart of a robust firearms community. We understand the needs of both enthusiasts and those seeking responsible self-reliance. Tyler is available for technical support for every product we sell, ensuring you have access to the same knowledge that serves our local clientele.
Legal & Compliance Information
Federal Law: It is legal under U.S. federal law (18 U.S.C. § 922) for an individual to manufacture a firearm for personal use without a serial number or license (FFL). This firearm cannot be sold or transferred and must comply with the National Firearms Act (NFA) if applicable (e.g., creating a short-barreled rifle). The builder must be at least 21 years old to manufacture a pistol and must not be a prohibited person.
State & Local Laws: Laws vary significantly. It is YOUR responsibility as the purchaser and builder to know and comply with all laws in your state, county, and city. We will not ship to jurisdictions where possession or manufacture of unfinished frames is prohibited. As of our last update, this includes states like California, New York, New Jersey, Washington, and others with specific restrictions. We actively verify shipping addresses against current regulations.
Our Commitment: We are a Tennessee-based business operating in full compliance with all federal, state, and local laws. We conduct age verification and will only ship to the confirmed address of the purchaser after review. We are not lawyers; this information is a guideline. Consult an attorney for specific legal advice.
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Ready to Start Your Build?
Stop browsing generic parts from big-box retailers. Build a pistol with components selected by a professional gunsmith, backed by real technical support. Choose from America’s most trusted Polymer80 kits, shipped fast from Nashville.
What Our Builders Say
“First build was a PF940C kit from these guys. Followed Tyler’s router video to the letter. The frame came out perfect, and the included LPK had a crisp, clean break. No filing needed. This is now my everyday carry. Thanks for the great product and support!”
– Mark R., Franklin, TN (Product: PF940C Complete Build Kit – Sniper Grey)
“I’ve built three P80s from different vendors. The parts kit from Polymer80 Kits was noticeably better. The trigger housing was in-spec and the connector angle was correct right out of the bag. No ‘ghost reset’ issues like my last two builds. These guys know what they’re doing.”
– James L., Louisville, KY (Product: OEM-Spec Lower Parts Kit)
“Had a question about rail fitment on a PF45 build. Sent an email with pictures on a Sunday afternoon and got a detailed response from Tyler himself on Monday morning. He identified a slight burr I missed. Problem solved. That level of service is unheard of.”
– Carla S., Atlanta, GA (Product: PF45 Frame & Jig)