ATF hasn't actually been doing any determinations in the last couple years. They very well could have one of these in pergatory like the rest of the accessories, machine gun uppers, etc that are about 3 years past due to hear back from the ATF on. I'll be curious about their "opinion" which hold no force of law even though they think it does.
This device does not make a trigger faster, it just lets you keep up with the gun in the same way a binary trigger does. Nothing keeps up with Jerry Michelaks trigger finger though. ATF probably would determine Jerry to be a machine gun is we sent him in for determination.
Curious to see what happens with this. I know I've been having a riot with a BFS and a 22LR kit.