We get another take on the Specna Arms Rock River Arms SA-E08 EDGE AEG if it is an AEG that will be recommended by Hunter Airsoft after his review. The Specna Arms RRA SA-E08 EDGE M4 Rifle is an AEG that is equipped with a variety of features, including a KEYMOD handguard, a factory-fitted MOSFET X-ASR module, an internal precision barrel, and an ESA Quick Spring Change System. The replica also features an ORION gearbox that is ready for cooperation with M140 springs.