Core & Subsystems - what are they for?

Are these just cosmetic, I’m not noticing any stat changes? For instance I installed a #6 Stabilizer - scatter/right. Then clicked on the right item, which is a sniper rifle and scatter looks exactly the same.

If I’m not understanding what it means, probably because many descriptions are pretty ambiguous.

I dont think these work just yet. I could be completely wrong. however like you I dont see a change and figure, ‘its not implemented yet’

Hmmm, I thought they were working before this last patch. I’m going to have to double check now.