Why gun control cannot exist

Please take your time and look up 80% lower receiver. This is the piece needed to complete an Ar15, and the only part of the gun the government requires to be serialized unless you machine your own lower receiver.

I will do a follow up post going more in depth about what it is that these weird looking pieces of metal actually are, but I am wanting you to do more research of your own so you understand terminology that will be used in the later post. Thank you!