So I was able to assemble a Marauder out of finding parts on planets . . . a few missions in- I have visited 4 planets so far! I also lucked out and took the head off the crappy Banshee to end up with the whole chassis, taking money over salvage on a lot of the missions. So the weird thing is, I find that mechs and bits of mechs are WAY more common . . . but the frequency of weapons is still the same, for example I have not seen a single AC for sale on two of the worlds. But I did find a pair of Small & Med Pulse, and see the LBX ammo available.
So now after a few planetary stops I am fielding a lance of a Marauder 3R (but no AC! So more like super WHM), Centurion 9-A, Wolverine 6R (bought from parts!), and a Assassin w/ML & 2 SL.
Really liking the Assassin's ability to hunt down the lights.