On my second play through, I only took contracts against Local Government or Directorate targets, so everybody loved me (though that meant I had to stay in the Frontier).
I took my time Before going to Weldry to launch the Restoration, putting in a good two years doing contracts on every independent system in the Frontier. Worlds with Former Star League presence, like Kimi, were selling Gauss Rifles even before I got access to the black markets. I also picked up COIL weapons and an ECM unit on a world rimward of Independence.
One interesting note about the COIL weapons - the maker brand is “Herakleion,” implying that they didn’t originate from the Dobrev, but were Blakist prototypes from Jardine/Herakleion, possibly being field tested in remote regions of the Frontier.