Two new videos from RA-Tech as they announce the new generation WE M4 Gas Blowback Magazine. On the outside there's no difference, but when opened the new one has a tighter build. Also, with the WE M4 AEG announcement, they also test other M4 AEG Magazines if they can work with this new product and with 3 magazines from 3 different brands, the WE M4 AEG does not show any feeding issues.