It is really hard to find a full licensed airsoft glock in the airsoft market given that Glock does not allow it and only agreed for use in LE/MIL training through Cybergun. Nevertheless there are many airsoft alternatives for a Glock in the market, such as the Echo1 TimberWolf that is available at Airsoft R Us Tactical. Video below is a comparison between it and the real Glock 17.