Caracal does have it's US arm and have facilities in Idaho and New Hampshire with their product offerings listed on several firearm platforms. They're hard to find but not impossible to procure
https://caracalusa.com/
https://www.guns.com/firearms/rifle...to-semi-auto-30-rounds-16-barrel-new?p=815149
While I haven't done a deep dive on Caracal, I've previously come across some of the info you posted like from
this page,
this &
this and wiki is the last thing i'd refer to but I'd personally take the word of someone I hear in person from my time at the range, some of whom are vets. It's obvious the designers would say 816 is a better product that 516 or 416 since that's their latest design and from what I've seen, there's not really enough info be it from a civilian or military standpoint to claim 816's superiority. Also, Chris isn't with Caracal as of 2022 while it's unclear if Robert is still the COO or not
We clearly know IA doesn't do jack shiite from a testing standpoint when it comes to foreign maal. I agree it might be a better option from a political viewpoint but all we end up with is screwdrivergiri and I'd rather have SSS hire some LMT guys to improve on the P72 platform