I have read like a destructive although, the finish isn't great for a $400 trigger and I believe it dependant on pics. Then also some do complain they do not work ideal - suspect it's relevant to non spec bolt carriers (lots of AR's around include variants, Rugers one example https://enhanced-reset-trigger-ra85185.bloggazza.com/33707254/the-basic-principles-of-trigger-rare-breed