Guys, I'm a FFL and a Class III dealer. You want problems with delivery services..?
1. FEDEX: Four cases (7.62x39) of ammunition went missing. The last tracking scan was at the origin. This was during the obama scare, so you can bet that I paid a LOT more money than normal for that ammo.
2. FEDEX: Sound suppressor (silencer) went missing. Had to call BATFE, which is always fun. Report filed. Suppressor turned up in Oregon (it was shipped from Idaho, so I'm really confused). Funny how FedEx overnighted it at no additional cost...
3. UPS: Submachine gun went missing. It started from a dealer in the midwest and the next scan was in MONTANA headed toward CANADA. (The destination was Arizona.)

It got turned around QUICKLY and eventually made its way to me about two weeks later. This was a personal "dream gun," so I was MAD.
4. FEDEX: Sent a USAS-12 (think of a M16 in 12 gauge) barrel from WI to MO. It was sent sig required. The driver SIGNED FOR THE PACKAGE HIMSELF because he was being LAZY and left it at the wrong house across town. Thankfully the homeowners were honest and called FEDEX to pick up the barrel.
5. USPS: Was receiving a GSG-5PK that had a shoulder stock and was registered as a short barrel rifle (NFA/Class III) for a customer. It was sent sig required. The driver SIGNED FOR THE PACKAGE HIMSELF because he was being LAZY and left it on my stoop. My stoop is in full view of I-94 going direct to Chicago AND in full view of a public bus stop that goes from here (good area of town) to the ghetto. I was gone from 6am until 1am THE NEXT DAY. Thankfully it was still there.
6. UPS: Left a semiauto AK47 leaning up on my back stoop. (See above for a description of why this is bad.) The sender "forgot" to insure and sig require the package, plus he never told UPS that he was shipping a firearm. Oops- federal law violation there. Any how, it was gone when I came back. Called BATFE. BATFE called the local police, the Illinois police (standard practice because our stolen guns go south to IL), Chicago police (again, standard practice) and Washington police (the origin point). They also notified the BATFE stolen gun HQ at national in WV. Local BATFE offices here, in Illinois, and in Washington state were called. Thankfully the rifle was found. My NEIGHBOR saw it, saw kids at the bus stop eyeing it, secured it in his garage, and then went off to work two double shifts. He forgot to notify me and crashed into bed when he got home. (Steel worker who was working mandatory overtime - I don't hold it against him at all.) The sender's failure to follow standard procedure AND federal law caused four police agencies and four federal agencies across four states clear across the country (from WA to WV) to stuff in their shorts. There's an impolite term (I'll leave it to your imagination) to describe this. Any how, the sender - A FFL! - got a very stern discussion over this disaster.
There are more that I'm forgetting or that I'm purposefully blocking from my brain right now.
Mike