Moon Jonggyu test the GBLS DAS M4, the latest airsoft gun to come out of South Korea against the PTS Masada GBB-R and the KWA AKR74M ERG. The DAS M4 which is a electric blowback AEG that can be taken down like a Gas Blowback Rifle, and it is tested in terms of performance against these products from two known airsoft brands. We do like the format in which they conducted the test. It should be something that other airsoft YouTubers would like to look into: