Suppressors 13 months??

THIS is why I like to send in the forms myself. (I got burned on my first NFA purchase when the dealer forgot.)
But I've heard that some don't dealers don't want the customer to send them in for the exact same reason, customer forgets.

I always send the forms. Never trust your dealer to do it in a timely fashion. I've heard horror stories in that respect. I will have the dealer give my paperwork the last look (while I stand there) before putting it in the mail but never leave it with him. Hell, I will always make an appointment with my Chief LEO for his signature and get that done in person as well (not needed with trust?). Think about how much good will that is for you to have that conversation with them to make them feel at ease about what you're asking for.