P80 Frame

P80 frame (Polymer80) is a popular, unfinished, polymer, Glock-compatible handgun frame, often called an “80% lower,” that requires final machining by the user to become a functional firearm receiver, offering significant ergonomic upgrades like a better grip angle, texture, and undercut trigger guard for DIY builders to create custom pistols using standard Glock parts. They’re known for customization and are built using kits, making them popular for personal defense and range use, but they’re not serialized factory Glock parts.