Ced23Ric Posted January 11, 2013 Share Posted January 11, 2013 (edited) These drop from alerts with "?" rewards, among other cool rewards. You can put them into weapons (Long guns, pistols, melee weapons) to unlock the 15 other upgrade slots. Alternatively, you can buy these for 20 Platinum in the store. They exist for Frames aswell, will post ingredients once I find one. Edited January 11, 2013 by Ced23Ric Link to comment Share on other sites More sharing options...
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