A new darling in the airsoft gas blowback segment of the market is here and it is the GHK MK18 Gas Blowback Rifle. With the design licensed from Colt Manufacturing and Daniel Defense, this uses the GHK M4 V2 system. It has an initial muzzle velocity of 120m/s, 245mm inner barrel length, and a 40-round magazine. Power source is 12kg gas and CO2. RedWolf Airsoft has this in stock and here is Marck of RWTV to give his take if this the best GBB rifle to date.