Oh you must have paid through the nose for that. Since that school shooting and the talk of weapons bans the price has shot through the roof. I can't even get a stripped lower receiver to build mine. Bolt carrier groups are also in short supply. Everyone sold out of everything real quick. Douche bags were trying to sell lowers that they got for $70 for $300-$500 on online auction sites. Magazines dried up also. Good luck finding a decent deal on ammo. Hope you got the 5.56 and not the .223.
I did get my upper assembly on christmas eve. It also came with a lower parts kit and hand grip. Now I have to wait it out for a while before I can get a lower and assemble it.
I also noticed that the AR-10 receivers disappeared. Those are more costly anyways and usually more scarce.
As for the burrito poo...it went better than expected.