Was shooting yesterday at an indoor range. Upper was a 12.5bbl Noveske, with 10k+ rounds already through it. KAC FH, KAC Upper, KAC URX, PMAGs.
I was shooting unsuppressed, semi-auto, with recently purchased XM193 from Recob's Target Shop (found that ammo in the popular ammo finding thread).
I was on approximately round 20-23 of a full 30 round magazine, and I pulled the trigger and felt an extreme GUSH of air on my chest/abdomen/legs. The magazine was literally SHOT out of my magwell, and the bolt was stuck.
The Upper came off the lower with ease, we eventually were able to remove the BCG out of the upper, the case was stuck to the extractor. The most unfortunate part was that half of the case is still stuck in the chamber.
No injuries, no blood, just a little dirtier than usual From what I've been told, this will be an easy fix.
To Summarize, after the kaboom, this is what seems have survived:
What didn't survive:
Extract has been bent
o-ring blown in half
Will be calling Federal on Monday to see how to handle the rest of the ammo.
Here are some shitty pictures, im no photographer:
You can still see half of the case stuck in the chamber: