Lots of YouTube shit out there showing it to run flawless. I believe fact is, it’s selective. I’ve got good shit to install the trigger. YH upper, LMT lower. I’ve invested an additional $150 to get to the point where it will give me two or three 4 round bursts. Is it fun? F Yes! Is it reliable? F No!!! I respespect the shit out of the company for their To the ATF! It is ABSOLUTELY not a machine gun. The whole premise in which it was designed and distributed is a paramount input rights to 2A. Buy it and enjoy what it provides, don’t trust your life to it.