a couple of years ago, i sent in the form (cant remember the number ~ 3620 ?) for transporting NFA items interstate.  they sent back a note saying they could not find the record.  well, i talked with several folks ref. this incident and did nothing (probably should have...).  

anyway, was wondering what the best course of action might be to correct this.  i was thinking of making a copy of my Form 4 and send in the 3620 this go around and see what happens?  

any past experience in this area would be appreciated from the legal standpoint....

Quoted: Typically when this happens it's because they ran the serial number wrong.  Ran a O for a 0 or a I for a l  or a 1 You do not need a 5320.20 for silencers and AOWs but will for other NFA items, the ATF will approve back forth travel for a calender year at a time on those items to your our of state location. Send in the form 5320.20 again and just include a copy of your form 4 on the item, it will be hard for them to claim it's not in the system when they have the copy of the original form.

So, I live in AZ.  I could legally take my AAC Evo-9 suppressor (which my LLC owns on a Form 4) to Front Sight (Nevada) w/o any paperwork, registrations or approvals?