You need compliance parts in your post 89 guns to have them in original form. Don't ask who's going to know, who cares, what's it going to hurt. Don't talk about illegal mods to your guns. Don't post photo's of your guns if they are illegal. If you don't care that's your business, just take it somewhere else. Quit asking what makes them full auto. Everything you need to install a trigger comes in the U.S. trigger kits except the hammer spring and disconnecter spring. All other parts that come in your kit you don't need. Illegal activities will get you a one way ticket to prison and a one way ticket out of here. Thanks