I have a CAR that has been giving me some trouble (mainly with the buffer detent and spring coming out), but was fairly easily fixable.  Last trip to the range, a buddy was shooting it, and when he got done, I noticed the bolt wasn't closed and the firing pin was jutting out.  So anyway, my bolt somehow broke, I guess when he fired the last round.

My questions are these:
1.  It's an EA rifle, does anybody know if they'll cover this, especially since I am not the original owner?  Regardless, should I contact them to let them know this happened?  Some of my AR owner friends say they've never seen anything like this happen, so I din't know if the company would want to know.

2.  Where is a good place to get a bolt?  Are any of the online places better than others?  I'm looking to spend as little money as possible.  Thanks once again to the group.

So how much should I expect to spend?  Average that I've seen is around $40.  Is that decent, too expensive, or something that's going to break on me?

Quoted: I have a CAR that has been giving me some trouble (mainly with the buffer detent and spring coming out), but was fairly easily fixable.

Did you thread the buffer tube into the receiver tighter to keep the buffer retainer in place?

Quoted: Quoted: I have a CAR that has been giving me some trouble (mainly with the buffer detent and spring coming out), but was fairly easily fixable. Did you thread the buffer tube into the receiver tighter to keep the buffer retainer in place?

Yes, eventually.  The first time it happened, the detent came out with the bolt carrier and got stuck in it, preventing it closing all the way.  I didn't realize it had come out, so I hit the forward assist, which mangled the detent beyond use.  When I got a new one and screwed the buffer tube in further, the upper wouldn't quite close so I had to file the top of the tube down to make it fit.  So now that's fine.