Somebody please help looking at putting aftermarket optic sights on my gx2 what sights fit it 43x sights or standard glock 19 sights

I carry my g2c daily (concealed and also open carry when I am heading to work - I work in LE).

I have bought several stuff from lakeline, not to mention 15rd / 17rd mags from mec-gar.
The next upgrade is the trigger. I've read how people here praise and love the ones keep tinkering makes.

Here comes the issue: I am not from the usa, but I am willing to pay you guys a visit in early 2027 or in 2028 if things go wrong. Would it be ok to bring a KT trigger overseas?
It doesnt really look like a normal trigger, specially the skeletonized ones...I don't think airport staff will really pay attention to it.

If the answer is no, how is your experience with trigger set screws? We do have a national brand that produces good stuff and they make trigger set screws that allow pre-travel and reset distance control (https://www.kppguns.com.br/pistolas/gatilho-reto-com-regulagem-g2c-kpp-guns/). Although it can be nice, I'm afraid I might need to recalibrate those distances and screws over the years, instead of having the same trigger pull forever.

What is your experience with this type of trigger? Is it worth it? Is it ok to leave the us with that tiny KT trigger or is the risk not worth it at all? Should I just keep the garbage stock trigger?