Pingu.0211 shows the custom build HPA-powered airsoft rifle with the Tokyo Marui M4A1 MWS as the base gun. This uses a Redline Mini-SFR, HK Army 48cu 3000 PSI Tank, Black Variable V2 hpa Adapter, and PTS EPM1 and EPM1-s magazines... "Turning the Milsim king into a Speedsoft slayer. Combing the world of heavy recoil and ridiculous amounts of ammo."