According to Firearmchronicles
Senator Steve Daines of Montana filed SB 3139 to fix that very problem and extend FOPA’s protections to ammunition and magazines. Daines’ bill greatly improves protections for stops along the way. “(b) In subsection (a), the term ‘transport’ includes staying in temporary lodging overnight, stopping for food, fuel, vehicle maintenance, an emergency, medical treatment, or any other activity incidental to the transport.
While that’s much better than current safe passage provisions, I thought it needed tweaking to prevent anti-gun jurisdictions like New York from interpreting delivery stops on a route as the “destination” where the firearm possession would otherwise violate state law.
Rep. Mo Brooks‘ office agreed. He and thirteen co-sponsors have filed the “Lawful Interstate Transportation of Firearms Act”, with much improved language. Contrast Sen. Daines’ definition of “transport” with this.