Greg Wong, or better known as Spartan1117gw on YouTube, gets his hands on the Magpul PTS RM4 ERG together with the US-based guys of Magpul PTS, Jeff Takeda and Alex Ko. The ERG is the KWA's electric recoil and blowback offering that they want to give stiff competition to the Tokyo Marui New Gen AEGs, and the Bolt Airsoft BRSS. The ERG, just like the BRSS is still compatible with standard Marui M4 magazines unlike the Marui New Gen. Watch carefully to learn more about it.