Total Recoil Airsoft got their hands on the GHK Colt MK12 Gas Blowback Rifle and they share their first impressions in this video. The GHK MK12 is a Colt licensed gas operated airsoft rifle that uses the GHK V2 M4 system with new features. The receiver is made of T6061 forged aluminum alloy, similar to real AR receivers, and other parts are made of steel or CNC steel. It features a fixed buttstock and a new, easily adjustable hop-up system. The rifle comes with a 20 round short gas magazine and is compatible with all versions of GHK M4/AR/G5/GMAG gas magazines.