I just picked up a Dairyland Defense 3 position FRT. The trigger looks like it is MIM metal in a nicer casing than what you would see on something like a CMC drop in.
I tried it in an AR15, after using a super safety where you can really pinch the trigger to the rear and ride the reset forward, and found that it bound up the BCG.
However, I dropped it into my MCX Virtus 300BLK 6.75" and it ran like a champ through several magazines. I installed a trip into the Virtus from Midnight Machine. It requires a small bit of sanding to not contact the BCG, but took two seconds to fix.
I'm curious how long the reliability will be on this. I am going to leave it in the MCX and almost exclusively run subs.