for Glock 42 Grip Frame Plug .380 Black NDZ - NDZ Skull 1 Engraved NDZ Billet Aluminum Grip Frame Plug for Glock 42 100's of High Quality Permanent Laser engraved images by NDZ Performance Fits flush, prevents snagging Billet Aluminum plug includes set screw, allen wrench for installation and removal 100% Aluminum - NOT plastic. Also helps guide mag. into magazine well