Combat Casual tries a Specna Arms Rock River Arms EDGE 2.0 AEG to find out if EDGE 2.0 is worth the hype as hasn't tried one before. The EDGE 2.0 models, based on the full-metal construction of the SPECNA ARMS EDGE AEG replicas, include standard and Rock River Arms licensed replicas. The upgraded version features a GATE ASTER unit with optical sensors, a high-torque motor, a flat hop-up, and an ESA2 system for enhanced performance.