Not sure if anything changed between the gen2 and gen3. My gen1 is still rock solid with the T97.ca FTU. Had a friend with the gen2 flat top rail, and the rail kept coming loose and he would lose zero.avoid them all, T97 gen 3 is the best bang for your buck, or you could try your luck with a gen 2 raven. smartest move would be to save your money and get a X95.
Both our rifles ate any ammo we put through them without issue though, including some of the cheapest steel core money can buy. Mine had issues when I first got it, but it turned out to be the mag it came with. After sending it back, and having it shipped back to me with a new mag, I've put thousands of rounds through it since. Zero problems. It's about as reliable as my Tavor21 I would say.