Product Features: PROUDLY MADE IN THE U.S.A. Made for Glock 10mm and .45 double stack magazines. Drop your magazine, extended mag, or drum with the push of a button. Picatinny Rail mountable. Integrated Hand Stop. Ergonomic Design. Matches perfectly with your APEX Bullpup Conversion Kit! Whats Included: 1 x Vertical Fore Grip w/spare mag holder, 2 x Fastening Nuts, 2 x Fastening Screws, 1 x Allen Key