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.
-
20 weapon parts for 10 vanguard/crucible marks. Same as other upgrade materials. I guess that would make parts kinda limitless, so i would be cool with like 5 weapons parts for 20 marks. I am constantly maxed on marks with nothing to spend them on.