Personally I'm getting sick of all the first AR posts that sound like this:
"Got my first AR. Actually it's an Bushmaster Quality Parts Company XM-15E2S model. It came with a sling, one ten round magazine, a manual, a hard case, and a free 25M zero target. I took it to the range today but I had a problem. After I fired 10 rounds the bolt carrier assembly disappeared! I can't find it anywhere! Is this a common problem with the A2 - oh sorry the E2S - series weapons?"
Don't take this seriously. It's just a rant.[soapbox]