The S&W M&P 15 PSX is an official licensed product. Full S&W M&P 15 trademarks and markings are engraved and laser-engraved on the metal receiver and nylon fiber stock. Like all KA M4 AEG, there will be an unique serial number on the receiver, which is equipped with our integrated bolt lock/ release system. All the RAS for the S&W series is CNC machined out of aluminum and the AEG will come with a PEQ-15 battery box.