I have go through like a negative though, the end is just not great for a $400 trigger and I think it depending on photographs. Then also some do complain they don't work right - suspect it is actually linked to non spec bolt carriers (numerous AR's on the market https://rare-breed-trigger-review46678.techionblog.com/34762172/what-does-rare-breed-forced-reset-trigger-for-sale-mean