sooo i will let the pics talk and you guys tell me what i should.
i heard a "pop" at the ejection port cover(not like a normal pop)
maybe the rd was fully chambered idk.
pulled this exploded casing out.
and whats next to it is what fell out of the bolt.

this is the bolt. you can see the mars shaped hole (missing piece that fell out)

now..i thought wow..that sux. gun is broke now..
dropped mag. functions check. all is well.
another mag. failure to fire...cleared, another rd chamberd.
fired and ejected and chamberd another rd..then fired...
worx jus fine...minus one detail.
when i drop the mag, and pull the charging handle back it wont pull a rd out.
a rd in the chamber only comes out if fired, then it ejects.
but no manual ejection...

??
im guessing thats what broke and fell out?
can i buy this part? it looks broke in half