Evike Angel Custom AP10 Pistol Caliber Style Airsoft AEG M4 M16 to MP5 Adapter Conversion Kit (Package: Converter + Hi-Cap Magazine) High quality 100 Nylon Fiber Polycarbonate construction Easy tool-less installation (as simple as inserting a magazine) Textured ambidextrous flipper/paddle style magazine release Convert your standard M4/M16 to have a unique PDW style look Steel latch integrated for secure fit Precision feeding high-cap magazine Semi-transparent Built in magazine clamps to link multiple magazines together