Another thought here - AACs baffles on the inside are manufactured odd and angular due to the process they use, and yes, it's hard to tell from your picture, but they are likely normal.
If you have an end-cap issue, then you likely had a nick or a light baffle strike, but you can't really tell from the internals. If you have any issues or concerns, give them a call though.

Here are a couple links I found just hitting google. There are a few others on some of the various sites - you're not the first to wonder about the weird baffles, and other than making people wonder, they shouldn't affect anything.
http://www.300blktalk.com/forum/view...90540&start=40
http://www.silencertalk.com/forum/viewtopic.php?t=93535
http://www.silencertalk.com/forum/viewtopic.php?t=49110

It's not brand new tech, but I still love my sdn6 and take it out everytime I go. I know some had a POI shift, but mine has been pretty solid. But heck, who takes the darn thing off once it's on anyway?!?

Tim - 2 FEET??? That's nuts man. Wow, I hope they did something to fix that for you. That's not even remotely acceptable.