Ok, mine is a post 2017, and wanted to know what my options were? I have searched the site, but saw everyone that had a question already had the folding adaptor.

Hera arms SFU or similar.

hera is my choice

Too bad Kriss hasn't released the folding stock for the new style receivers. When I had my Kriss Vector I had a Tailhook mod 1 on a folding cheek piece.

I had to go used to find a Vector pistol with the folder hinge still built in. The upper with a hinge mech is still an active sku in their catalog but a Kriss CS rep told me there were no immediate plans to put it back into production. I would probably adapt the most compact PDW-style telescoping brace you can possible find, or as suggested us a Hera Arms folder. Though I have to say, the look of a Vector with an AR stock on it is growing on me.

But literally the only time I fold the brace is when it goes in the bag to the range.

I'd like to find a gen 2 upper with the folding hinge to replace mine without the hinge, didn't think I would care about not being able to fold it but I'm starting to wish I could