In the latest episode of Brian at Echo1, he unboxes and opens up the Echo1 MTC 3 Modular Tactical Carbine "Master Blaster" AEG. This AEG is ready to go at 380fps initial muzzle velocity  and easily upgradeable which Brian will show you how. This comes with a vertical foregrip, a 300 round high capacity magazine and it's Lipoly battery ready.

You can check the full specs of the product at the Echo1 USA website.