I’m now in the process of filling out the “Form 20” to allow transfer my SBR AR9/suppressor from Mi to Tn. As I understand, the form/approval is valid for 12 months and is only required for the rifle... any pitfalls to be avoided? My scanner is in the office... so I’ll have to mail it in - or would they accept a “photo””? Since it appears to take 45-60 days... would it be best to request the start date +45 days? This is for range practice only - is there a way to seek approval longer than 1 year at a time? Thanks for the guidance!