Polymer80 PF45 80% Pistol Frame Only

Build your next large-frame pistol project with the Polymer80 PF45 80% Pistol Frame Only. Designed for shooters who want a custom .45 ACP or 10mm handgun without the burden of a serialized receiver, this frame provides a foundation that requires final machining to become a functional lower. As an unfinished blank, it ships directly to your door with no FFL transfer, giving you full control over the build process from start to finish.

Overview

The Polymer80 PF45 80% Pistol Frame Only is the first true large-frame 80% platform on the market. Built to accommodate both .45 ACP and 10mm calibers, this frame mirrors the ergonomics of a full-size Glock 21 or Glock 20, but with the added benefit of a custom, user-completed build. Each frame is molded from high-strength, impact-resistant polymer and includes all necessary jig components to guide your drilling and finishing process. Whether you are a seasoned builder or stepping into the 80% world for the first time, this frame offers a reliable, cost-effective starting point for a dedicated large-caliber pistol.

Features & Specs

Every Polymer80 PF45 80% Pistol Frame Only is precision-manufactured to strict tolerances, ensuring compatibility with standard Glock 21/20 parts kits. The frame includes integrated accessory rails for lights or lasers, a textured grip surface for secure handling, and a steel-reinforced locking block for enhanced durability. Below are the key specifications and features of this frame:

• Manufacturer: Polymer80; Category: Frames. Unfinished polymer construction requires completion of the three pin holes and pocket work using the included jig and end mills.
• Compatible with Gen 3 large-frame parts kits for .45 ACP (G21) and 10mm (G20). Internal rails are pre-installed; magazine catch and slide release must be user-installed.
• Integrated Picatinny-style rail section for mounting lights, lasers, or other accessories. Textured grip panels with finger grooves for improved recoil management.

The polymer80 pf45 80% pistol frame only is not a firearm and contains no serial number. All machining work must be performed by the end user to complete the frame into a functional lower receiver. Expect approximately 60-90 minutes of build time when using the provided jig and a standard drill press or hand drill.

Who It’s For

This frame is intended for experienced firearms enthusiasts, hobbyist builders, and anyone who prefers to assemble their own handgun from a blank slate. The Polymer80 PF45 80% Pistol Frame Only suits shooters looking to create a custom .45 ACP or 10mm pistol without the wait or paperwork of a traditional FFL transfer. It is not recommended for complete beginners without prior experience using jigs or power tools. If you have assembled an 80% pistol frame before, this large-frame variant offers a straightforward expansion of your build capabilities. Law-abiding citizens in states where 80% frames are legal may purchase this product without a background check, but you must comply with all applicable local, state, and federal laws regarding unfinished frames and self-manufactured firearms.

• Builders wanting a large-caliber 80% project with proven Glock aftermarket support.
• Shooters who need a reliable .45 ACP or 10mm platform for range use, competition, or personal defense.
• Anyone seeking a non-serialized frame that ships directly with no FFL transfer required.

Shipping & FFL

Because the polymer80 pf45 80% pistol frame only is classified as an unfinished, non-firearm item, it ships directly to your residential or business address with no FFL transfer fee. No background check is required at the time of purchase. However, you are solely responsible for ensuring that ownership and completion of 80% frames are legal in your jurisdiction. Some states, including but not limited to California, New York, New Jersey, Connecticut, Massachusetts, Maryland, Washington, and the District of Columbia, have specific restrictions or outright bans on the sale or possession of unfinished frames. By purchasing this product, you confirm that you are legally permitted to own and complete an 80% firearm frame in your area. This product is not a firearm and cannot be transferred as one. No FFL dealer involvement is required for this transaction.

• Ships via UPS Ground or USPS Priority to all eligible states. Typical delivery time is 3-7 business days.
• No FFL transfer, no background check, no additional paperwork. You will receive the jig kit, frame, and all necessary tooling.
• WARNING: This product is intended for personal use only. It is illegal to manufacture a firearm for sale without a federal firearms license. Completion of this frame creates a firearm under federal law, and you must not transfer it to another person without complying with all applicable laws.