Eddie shows us the new GHK M4 RASS GBB with a 14.5inch barrel which is now available at CRW-Airsoft. This GBB has a steel bolt, barrel and control group, and aluminum receiver and CNC RIS and they say is an excellent gas blowback rifle. After showing us what's in the box, Eddied show us an upgraded version for testing, showing the accessories that he has installed to make it more spiffy.