I've only gotten 7 or 8 of them in the 50 hours or so that I've played the game since last Friday including the mods that I've bought directly from Banshee with all my glimmer. Pls make them drop more frequently??? It's really hard to power up without all your weapons being as high as possible...
EDIT: WATCH THIS VIDEO https://youtu.be/FYdRlFr5NVk
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I had to make all of mine, never seen one drop