thanks StrangerDanger
I dont think it is anything nefarious at all, I talked with him enough. He seemed like a good guy, good to go! ?
It may be something else at play, he may travel for work (may be really busy with work and shipped it off and never sent shipping like the first time) I never received shipping for the m4 either, had to contact the FFL and get it.
If the package did get sent back which would make sense with the timing, and he shipped it back friday/saturday.. I would not get it till mid late this upcoming week.
the lack of communication is what concerns me, as I would do my best to communicate quickly and others I have deal with do the same. But that is what it is!
****He got back to me and has been busy with work in an area with bad reception. hopefully gets shipped out monday****