I have a variation of that lower I got as part of a group by a few years ago on lightfighter. mine is safe/semi/shtf. I have the skull and crossbones, but not quite the same..it has a few more things on it as well that relates to lightfighter...There are a few manufactors out there that will make these kind of receivers (or whatever you want) as long as you purchase enough of them to make it worth their while.
Dan
