Blueprint items

So, I searched the forums and couldn't find the info I was looking for, so I figured I'd ask here.

In my singleplayer, when I choose "Buy" in the catalog, it gives me a blueprint to fill with the parts and spawn the ship. On the multiplayer server, it just buys a completed ship.

It's this a server config thing, or is there someway I can still get the blueprint and supply my own parts?

Edit: No "but groin"...Damn autocorrect