No, this didnt happen to me.....
I hope its ok to post this link here like this, I just think this may be some important info.

This guys S&W M&P15 exploded, and the CEO of the ammo company supposedly said they have been having problems with overpressured ammo due to the powder.
If the CEO admitted that quick about an issue it might be common.
Some of the people replying say they had issues with the 7.62x51 as well.
Something to watch for if you have bought their ammo recently

http://www.ar15.com/forums/t_3_118/5...ed.html&page=2