After initially handling the VFC M249 Gas Blowback LMG, 4UAD Smart Airsoft give their thoughts if it is worth buying. The is the first practical M249 gas blowback machine gun is a highly versatile platform with an aluminum receiver that reduces its weight to just 3.4kg. It features an innovative independent air and ammunition supply system, a simulation aluminum bolt carrier, and internal polymer 100rnd lightweight magazines. The weapon is open bolt for increased realism and has a realistic quick-disassembly barrel design. It is equipped with a faux bullet shake system and a no ammunition firing and no ammunition not firing switching system. The LMG includes a dummy M4 magazine that holds the gas, but a gas holding box magazine can also be purchased for greater air supply.