SKU: PG-FI21G4
UPC: 605849200101
The Pearce Frame Insert for Gen4 Glock 21/41 is a precision-engineered polymer accessory designed to seal the frame cavity and enhance both the functional integrity and aesthetic finish of Generation 4 Glock pistols. This insert installs directly into the bottom rear cavity of the frame using the factory lanyard hole for secure retention, providing a protective barrier against dust and debris accumulation in a critical area of the firearm.
Manufactured from high-impact polymer, the insert is engineered to withstand field conditions while maintaining a clean, finished appearance on the frame. The design is fully compatible with or without the factory interchangeable backstraps, making it a flexible upgrade regardless of your grip configuration preference. Its lightweight construction—just 0.06 lbs—adds no measurable weight or handling characteristics to the pistol. The compact footprint (3 x 1.5 x 4 inches) ensures a perfect fit specific to Gen4 frames without interference with holster compatibility or tactical gear setup.
This insert addresses a real maintenance concern for shooters who operate in sandy, dusty, or debris-laden environments. By sealing the lanyard hole cavity, it reduces the entry points for contaminants that can accumulate in the lower frame group. Glock 21 and 41 operators—particularly those running full-size or competition configurations—benefit from this detail-oriented upgrade. Installation requires no gunsmithing and takes seconds, making it an ideal addition during regular field maintenance or when setting up a new pistol.
Pearce Grip specializes in ergonomic and protective frame accessories for Glock pistols, and this insert reflects that focus. It's particularly valued by tactical shooters and competition users who treat their equipment with precision and expect every component to serve a purpose. The insert is verified to fit only Generation 4 frames—earlier and later generation Glocks require different configurations—so confirm your pistol's generation before ordering.
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