I've been helping a friend out by cleaning some guns for him. Anyway, on this Remington 550-1 once I got the bolt out and cleaned up a little I noticed this. It looks broken to me as it's just a super odd shape. I didn't find any pieces of metal though however, the metal where this is missing also looks super duper thin. I mean really thin. If in the gun it would be on the side of the bolt you cannot see. I couldn't get a good picture of it nut here is what I could get. Here are the pictures I could get.
I tried to draw the shape in paint but it turned out horrible.
That's what I drew and in the pictures it would be upside down. Not good at all but shows you it's not straight cuts as it's like it has teeth in it.
If this is broken is it safe or do I need to replace it? Any idea where to get a nice bolt and what it should cost? I'm hoping it's not broken but I don't see why it would have that in it.
Thanks guys.