Official video from Classic Army showing their double barrel surprise, the DT4 "Double Trouble" M4 AEG. It is the the world's first Double Barrel M4 AEG and when used in the field, it means double trouble for those at the receiving end. It has an M-Lok System for a rail system and an initial muzzle veloctuy of the 330-350 fps. It is now on pre-order at the airsoft retailers worldwide.