The (Polymer80 PF45) is a high-strength, reinforced polymer 80% pistol frame designed for "large frame" builds. It serves as a customizable foundation for enthusiasts to build their own handguns compatible with Glock 20SF (10mm Auto) or Glock 21SF (.45 ACP) slide assemblies and magazines. Key Features and Specifications
Often cited for better ergonomics than original Glock frames, including a "rakish" grip-to-frame angle and improved finger grooves. The 80% Build Process
Designed for Gen 3 large-frame Glock components.
Builders use a provided finishing jig and drill bits to remove excess material and drill pin holes.
Once machined, users install a lower parts kit (LPK), including the trigger housing, trigger bar, and connector.