Hmm I'm not certain, usually at the bottom of the page it shows a list of vendors or mobs, region and %chance to drop. Perhaps it is craftable only? But when I look at the components to create it they have no vendor/drop list either...So I'm not certain.
I can't remember what the PS mission for Menace is, and I can't get in game right now, so I'm completely unsure of this, but I remember I'm in the process of a mission for my PS (I don't have menace, so it may very well be for that), where I have to mine like 100 of a material from asteroids...So it might be possible that for the PP you have to manufacture everything required for the mission...Perhaps someone who's done it before can confirm, I have yet to play a PP.