I returned the case you got because it didn’t fit my edc(m&p9c). We have the same locks . I’ve flown several times with them and have had zero issues with TSA or any airline.

And here’s the case I use

CASEMATIX Hard Gun Case for... https://www.amazon.com/dp/B086B92H1F?ref=ppx_pop_mob_ap_share

Again zero issues. I have 2 loaded mags in it and use the foam to hide the rounds in the mags(front facing down). They’ll ask you to open your case and show them so they can put in a tag, and give you the “receipt” part of it. They are NOT ALLOWED to touch inside that case in any way shape or form. So they can’t know if they’re loaded or not. Not saying it’s the right thing to do but…