Pheas Airsoft checks out the Scalar Airsoft Seraph HPA Engine in this unboxing and review video. SERAPH is a new electropneumatic HPA drop-in engine kit that replaces internal parts inside the gearbox shell of AEG replicas with Tokyo Marui standard dimensions. Powered by SCALAR's own solenoid valves, SERAPH is said to be cheaper than any other existing engine on the market. It uses standard AEG cylinder heads and nozzles for high modularity, so you can use parts from your old AEG or any part compatible with your replica internals. SERAPH offers the same performance and functionalities as the best engines on the market.