IIRC you can get them through the derelict freighter missions (which take forever and are kind of boring after the first one), or by blasting NPC freighters if you don’t care about reputation.
For the latter I’ve heard (but wasn’t willing to try myself to confirm) that you can just shoot the external cargo modules off of friendly freighters without them becoming mad and summoning sentinels.
IIRC you can get them through the derelict freighter missions (which take forever and are kind of boring after the first one), or by blasting NPC freighters if you don’t care about reputation.
For the latter I’ve heard (but wasn’t willing to try myself to confirm) that you can just shoot the external cargo modules off of friendly freighters without them becoming mad and summoning sentinels.