You must be the one that's confused - you must think that just because the name is "Megalithic," that means it's NOT an AR-15, and cannot possibly be one. Check this out:
http://www.megaarms.com/ar-15/upper-receivers/mts-440/
Yep, you fukked with it, now it doesn't work. So, you feel like you need to "warn" everybody on every gun site about it.
Seems to me that the real problem is - you don't know what you did, and you can't figure out how to make it work again. I told you in my first post that I could help. However, I don't think there's any helping you, at all...
Now, how's that? Please explain...