Good point. It should be visible through the habdguard. On my AR SBR'S it's on the front of the magwell. This is the requirement: "The manufacturer, importer, or maker must legibly and conspicuously place on the frame, receiver, barrel, or pistol slide (if applicable) his/her own name (or
recognized abbreviation) and location (city and State, or recognized abbreviation of the State) as specified under his/her Federal firearms license (if a licensee);"
Sent from my iPhone using Tapatalk