The G&G TGM A5 Airsoft AEG, which is G&G Armament's take on the MP5 SMG, though the A5 variant seems to be different from the MP5 A5 too in terms of stock as this one has a UMP stock. The description provided below was taken from Wikipedia by eHobby Asia, and they're selling this AEG for US$265.00, shipping costs not included yet.

"The Heckler & Koch MP5 (from German: Maschinenpistole 5, 'machine pistol model 5') is a 9mm submachine gun of German design, developed in the 1960s by a team of engineers from the German small arms manufacturer Heckler & Koch GmbH (H&K) of Oberndorf am Neckar.

The MP5 is currently one of the most widely used submachine guns in the world, having been adopted by numerous law enforcement agencies and special forces groups. In the 1990s, Heckler & Koch developed the Heckler & Koch UMP, the MP5's successor; both are available as of 2012.

• 1/1 Scale High Power Assembled Electric Powered Airsoft AEG
• Aluminum/Magnesium/Nylon/Fiber/Steel/Zinc/Plastic Made
• 3 Sided RIS Railed Handguard accommodate lot of accessories
• Foldable UMP Stock
• Include Low Profile Mount for mount the RDS and Scope
• Metal 70mm PDW Tactical Flash Hider
• High Capacity magazine accommodate 200 Rounds of 6mm plastic BBs

• Quality G&G 8mm ball bearing Gearbox
• RIS Handguard allow installation of 8.4V Twin Type Battery (Not Include)
• Surprisingly, this stock AEG shoot out 360FPS muzzle power nicely out from the package
• Sling mount can be installed with any single, 2- or 3- point tactical sling
• Fast charger also included (220V EU type Standard Plug, require Voltage Converter for United States)"