We offer .223/5.56 to Blackout Conversion Services. We charge $.09 each. They are fully processed (swaged, deprimed, trimmed, and sized, and polished) and we usually have a 2 day turnaround from the day we receive it. We will do any headstamp you like as long as they are boxer primed (TAA,GFL are too thick and do not make good 300 brass, FC military also tends to be thicker depending on your chamber you may need to chamfer the brass, but the commerical FC is ok) All you need to do is mail the brass to us and we take it from there, we bill you based on the finished count when we are done making it, plus shipping back. It's that easy!!!