I'm about to order a complete upper and I'm wondering if I'll need an FFL holder to handle the transfer? Or is that only necessary when you're ordering the lower?
I'm sure it's a stupid question, but I'm a newbie so please bear with me! :)
No. The lower is considered the firearm.
No. The lower receiver is the actual "firearm". You can order/mail uppers through the mail without FFL.
+1 to the above posters. Go online, find the upper you want, and have it delivered to your door...

Thanks folks! That's what I thought, but before I placed the order I wanted to make sure I had all of my proverbial ducks lined up. Y'all rock- as usual!

Nick