Is it legal for US civilians to order from this site? If not, whom are they marketing to?
There seem to be an ongoing debate over the legality of Glock full auto selector parts, and AR15 lighting links. They seem to be legal to buy and own but illegal to install.
Since the sellers could argue these are mere pieces of metal, the only way they could get in trouble would be to advertise it for such illegal use. Therefore the dilemma of how to buy and sell if you cannot use the key words of “full auto,” “Glock,” or “AR.”
Since the legality is a bit grey Gun Broker.com pulls the Glock selector switches a few hours after one goes up. But I have seen lighting links for sale. They state its purpose is for full auto conversion however warn not to use it for such.