Have a new M16 style 3 round burst trigger for sale. Bought this one at first but ultimately decided to go with a Geissele Super Select Fire in the gun. Comes with everything you normally get when you buy this trigger kit anywhere else.  Trigger, hammer, springs, pins, disconnectors, cam, & sear. If you intend on installing this on a gun without first having the proper forms or legal authority to do so, then please do not ask me to buy this. I will only answer questions about what else you need or how its installed if you have a type 07 FFL. Basically, if you have a bunch of questions, this is probably not for you. Asking $110