Hey I am putting together a 10.5 Inch AR, I submitted the paperwork about 5 months ago (through a trust) and should be getting my stamp from the ATF any day now. My question is what exactly do i need to get engraved on the lower receiver? Is it only the serial number on the trust, City and state, or is it Name, serial number, City state and Zip, or something totally different? I've been poking around but get mixed results. Also, if anyone knows a place in Eagle River who engraves lowers?