Pearce Grip PGGFI Grip Frame Insert For Glock PG-GFI Black Pearce grip inserts install in the bottom rear cavity of the frame utilizing the lanyard hole for retention. For use on all mid and full size For Glocks. Grip extension Replaces the magazine floor plate. DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.