WE open breech series (PDW / AR / SCAR) gen 2 magazine

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Interesting split design, eliminates the need of the strange rectangular rubber band around the back, probably less prone to leaking from there, but other than that I'm not sure what improvements are installed, let's hope they have better made valves as leaking from the top seems to be the most common among the open breech series magazine, but let's wait and see.