I have a build code for the Daniel Defense website, which enables you to build and purchase a complete rifle or a complete upper. I registered with them when this craze started and it took about 2 months to receive the code. Their price is pretty reasonable given the high quality that DD offers, and they promise to build and ship your rifle (or upper) within 7 days of placing your order. I have built everything I need, and will not end up using this code. So I figured, if it's worth something to someone, trade me for it! Let's get creative!