What Happened to Polymer 80?
The story of Polymer80 Inc is a pivotal chapter in the modern firearms landscape. The company, a major player in the 80% lower market, faced a fundamental challenge with the implementation of the ATF’s “Frame or Receiver” rule in August 2022. This rule redefined what constitutes a firearm, classifying many unfinished frames and receivers, including Polymer80’s popular kits, as firearms requiring serialization and an FFL transfer. In response, Polymer80 Inc filed a federal lawsuit challenging the rule’s legality. While the legal battle unfolded, the company ceased direct-to-consumer sales of its 80% frames and restructured its business model. As of 2026, Polymer80 Inc operates primarily as a supplier to licensed manufacturers and through existing dealer inventory.
Is Polymer80 Out of Business?
No, Polymer80 Inc is not out of business as of March 2026, but its operational focus has shifted. The company no longer sells its 80% frame kits directly to end-users from its primary website. However, genuine Polymer80 products, including the iconic PF940C frame kits, remain available for purchase through a network of authorized dealers and distributors who acquired inventory prior to the regulatory changes. It is crucial to understand that frames and parts already in the supply chain are legal to own and complete in most states, provided the builder is not a prohibited person and follows all applicable laws for constructing a firearm for personal use.
The Polymer80 Lawsuit Explained
The legal proceedings stem directly from the ATF’s 2022 rule. Polymer80 Inc, alongside other industry groups, filed suit arguing the rule exceeded the ATF’s statutory authority and violated the Administrative Procedure Act. The litigation saw mixed results in various federal courts. While some injunctions were granted, broader rulings have largely upheld the ATF’s regulatory authority under the new framework. This legal landscape compelled Polymer80 to adapt its business practices to comply with the current interpretation of the law. The lawsuit highlighted the ongoing tension between regulatory enforcement and the home-build market, setting a precedent that continues to shape the industry.
Polymer80 PF940C — The Glock 19 Build Kit
The Polymer80 PF940C is a compact 80% pistol frame designed for building a firearm compatible with Glock 19 (9mm) and Glock 23 (.40 S&W) Generation 3 components. The kit centers on the unfinished polymer frame, which requires the end-user to complete the fire control cavity using the supplied jig and drill bits. Key specifications include its durable polymer construction, integrated front locking block rail, and a separate rear rail module. To complete a functional firearm, builders must source a slide assembly, barrel, lower parts kit (LPK), and upper parts kit (UPK). The PF940C remains one of the most recognized platforms for custom Glock-style builds.
Polymer80 Glock 19 PF940C Complete Kit — What You Get
A typical “complete kit” from dealer inventory includes all necessary components to build a functioning firearm, minus the tools. This bundle usually contains: the PF940C 80% frame with jig and drill bits, a complete slide assembly (often with sights), a barrel, a lower parts kit (all internal frame components), an upper parts kit (slide internals), and a pin set. Estimated build time for a first-time builder is 1-3 hours. Required tools typically include a handheld drill or drill press, a hobby vise, hammer, punch set, and files or sandpaper for finishing. Always follow the manufacturer’s instructions precisely.
Is Polymer80.us.com Legit?
Potential buyers should exercise extreme caution. The domain polymer80.us.com is NOT the official website of Polymer80 Inc and is widely reported as a scam site. The legitimate company website was polymer80.com. These deceptive sites often use similar URLs to sell counterfeit products or steal payment and personal information. They may appear after the company’s business model change to exploit customer confusion. To ensure you receive genuine Polymer80 products, purchase only from established, trusted dealers with a proven track record in the industry, like Glockswitchstore.
Where to Buy Polymer80 Parts in 2026
For builders seeking authentic Polymer80 frames and kits, Glockswitchstore is a trusted source. We carry genuine Polymer80 PF940C frames, jigs, and complete build kits from secured inventory. Browse our full selection at our full catalog or go directly to our Polymer80 collection. As a licensed FFL dealer, we ensure all transactions are compliant and secure. We offer fast shipping and a secure checkout process, providing a reliable way to source these now-scarce components for your build project.
Frequently Asked Questions
Is Polymer80 still in business?
Yes, Polymer80 Inc is still in business as of 2026 but operates as a supplier to licensed manufacturers and distributors. They do not sell 80% frames directly to consumers. Existing dealer inventory is the primary source for end-users.
Is the Polymer80 PF940C legal?
Owning and completing a Polymer80 PF940C frame for personal use is generally legal at the federal level if you are not a prohibited person. However, several states have banned 80% frames outright. Check your state and local laws before purchasing or building.
What Glock does the PF940C fit?
The PF940C is designed for Glock 19 (9mm) and Glock 23 (.40 S&W) Generation 3 slides, barrels, and internal parts. It is not compatible with Gen4 or Gen5 models without significant modification.
Is Polymer80.us.com a real site?
No, polymer80.us.com is a known scam site. It is not affiliated with Polymer80 Inc. The official company site was polymer80.com. Always purchase from reputable, authorized dealers.
Where can I buy Polymer80 parts?
Genuine Polymer80 frames and kits are available through authorized dealers with existing inventory, such as Glockswitchstore. Be wary of unknown websites offering deals that seem too good to be true.
Check your state and local laws before purchasing or building.
Last updated: March 2026