Explosive Enterprises reviews the VFC M249 Gas Blowback LMG and explains that there is an untapped potential of this GBB. It is a gas blowback machine gun that is a lightweight, versatile platform weighing just 3.4kg, thanks to its aluminium receiver. It features an innovative independent air and ammunition supply system, a simulation aluminium bolt carrier for improved performance, and internal polymer 100-round lightweight magazines. The open bolt design enhances realism, and the weapon can be quickly disassembled. It also includes a faux bullet shake system for added realism when firing, and a no ammunition firing and no ammunition not firing switching system. The LMG comes with a dummy M4 magazine for holding gas, but a gas-holding box magazine is also available for extended use.