Talked to a guy shooting one this weekend at a match, less than stellar reviews. Mags seem to be an issue (nothing available over 10 rounds) and tuning the buffer and or gas. Looks like a really interesting option but very limited support. It would be great to see an American manufacturer take on this project. It just doesn't seem like anyone wants to be first. Right now it seems tough to beat the firebird tac 12 in this department. Sent from my SM-G900V using Tapatalk