The HG looks weird. Do china have to register to manufacture M16? US was the first one invented M16 if I remember correctly. I would be a stolen idea and violated copy right.
Contrary to popular belief laws set in the US only apply in the US other countries don't have to adhere to them, nor is there anything a US based company could do to a non US based company except try to sue them on their own country, which typically wont fly