getting premium ship components

Some while ago I noticed, I almost done Broker’s mission to get 15 premium ship parts. I had 12 from before, but now I can’t get any. How it works now?

Can I still get them for free?

After patch 1.4.3 there’s weekly rotation of premium ships components drop. ATM it’s empires engineer brock (r13), to get components you need to play with ships of the same rank and they drop after battles like regular loot.