The Drop Protection System (DPS) Plus-2 adapter set fits on Mec-Gar magazines with a polymer floorplate. It cannot be used to replace a metal floorplate. It is manufactured from durable polycarbonate. Grooves and angling on sides allow for better handling during magazine changes and reduces the shock to the magazine when dropped. Model Plus-2 Series Drop Protection System Material Polycarbonate Brand Fit Beretta/CZ/Sig/Taurus/Witness