SUNSET INSERT, FRAME INSERT FOR GLOCK GEN1-3 G20, 21 THE NEWEST INVENTION FOR GLOCK ACCESSORIES. THIS IS A PATENTED POLYPROPYLENE INSERT FOR STORING A CARTRIDGE WITHIN THE CAVITY OF GLOCK GRIP AND ALSO CAN BE USED FOR STORING SMALL BATTERIES OR TOOLS. EASY TO INSTALL & REMOVE. COMES WITH INSTRUCTIONS AND DETAILED PROCEDURES FOR INSTALLATION/REMOVAL. MADE IN THE USA THIS LISTING INCLUDES INSERT ONLY, DOES NOT INCLUDE ACCESSORIES SHOWN ON PICTURES.