Just throwing out my 2 cents but couldn't have been a blockage in your gas system? Bent gas tube at the key/ Or blockage in your gas key itself???
I'm no expert but I can't see how that would cause the BCG to detonate. IME gas tube obstructions usually just result in short stroking or failure to cycle.
Just spitballing, but I don't see how there could be a live round in the chamber. The bolt lugs are still engaged and the bcg is basically gone. I don't see how a fresh round could have been picked up/chambered when the whole bgc is blown to hell.
I also don't see how it could be OOB if the bolt lugs are engaged.
The way that BCG is blown to hell, it looks to me like the bolt carrier began failing several rounds prior to the kaboom. My wild guess would be that it was cracked pretty much all the way through when the last round touched off.
I suppose it could also be a really overpressure round, but I would figure to see more barrel damage and venting out the magwell. I also would not expect to see a largely intact bolt. I just don't see how you get enough pressure inside a bolt carrier to blow it in half without shearing off the bolt lugs.
I'm really curious to see what FailZero has to say.
I'm with ya on the whole failure of the bcg. I've read about fail zero having a bunch of bad bcg and out of spec bcg problems a couple years ago. Either way that sux
If you are after some money. Contact a lawyer. If you are after some answers send the stuff into Federal.
I'm not looking for money.
Known issue with Federal XM193 of all varieties. ...