In my experience, they will not notify you, and someone 18 or older will have to sign for the package. That is the way they (H&R/NEF) send out all their UPS shipments I was told by UPS. I even had to sign for a couple sets of sights and a ramrod 2 years ago, didn't even have a barrel or receiver in the box. UPS would not leave it, and because of my work schedule, I would miss the UPS truck by about an hour. So the only way to get it was to drive two hours round trip, plus the time wasted at the regional UPS pick-up. I paid to have it delivered to my door, but it doesn't always work that way.
I did get to talk to the driver and he was nice enough to let me meet him in a nearby town and sign for it there. That is the price I pay for living in the sticks. Still worth it.