I'll try to be a neo-mod here and pretend your just a newbie and don't know the ropes. It is illegal for you to buy a DIAS unless you buy a RDIAS-Regestered Drop In Auto Sear. You'll have to spend about $5000 and fill out ATF Form 4, wait 6 months for approval and if the paperwork doesn't get lost, you can put your $5000 1 ounce piece of metal in any AR you want. Or, a better idea is to buy a regestered receiver for around $8000 and get a complete rifle. However, the reason you are being treated like a troll is because you are asking how to build an illegal firearm. We do not want to be portrayed as one of "those websites" where the left wing media can get information on breaking federal law and put it all over the news. As was suggeted, go to the M16 section and read the posts marked READ THIS BEFORE POSTING. Then, you'll know how to be treated like a newbie and not a troll. If you ARE looking for info on how to spend a few years in the Graybar Motel, you are in the wrong place. Go find NazisRus or some other dumbshit sight for farm animal humping nazis or McVeigh wannabees. I'm sure you'll find all about how to build illegal guns, bombs and other stuff. Try the islamist websites after you learn arabic.