A footage from the SHOT Show 2015 shows Matt of Evike.com talking about the Valken Tactical AR-1 HPA-powered airsoft rifle. It is a blowback HPA with the HPA tank installed in the stock system attached to the buffer tube to feed pressurised air and power the airsoft gun. It has removable trigger groupings and other removable areas for easier maintenance. The receiver is compatible with AEG magazines and standard gas blowback barrel and hop-up assembly compatible.