If you're like me you must have spent all your WP rerolling a weapon and as a result have run dry. At least make the gunsmith able to sell them. It would make a lot of people's lives easier.
Edit 1: I don't have time to grind strikes, crucible, or patrol. To those of you saying just buy weapons and dismantle them, if you have actually done it then you should know how ineffective it is. 150 marks for 3 or 800 glimmer for 1. If you don't have glimmer or time than these are shit suggestions.
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This has to be a joke lol I had 800+ before HOW dropped and haven't went lower than 250 and that's after I rerolled all the pre how crucible guns and queens weapons. The easiest way to get engrams is strikes which I haven't did in a while.