I had an incident where a primer fell out during shooting and the primer was carried by the bolt face and acted as a firing pin causing the next round stripped from the magazine to ignite before completely chambered. The explosion destroyed the receiver of my Arsenal 107. Besides needing a change of underwear I got only minor facial lacerations and lots of smudging on my face. Fortunately had eye pro on.
My gunsmith did the autopsy and found the errant primer inside the destroyed receiver. The exploded cartridge was tightly lodged in the chamber about 3/4 way into the chamber and the entire base of the cartridge was blown out of the carbine.
Undo the tang screws and then start beating the h*ll out of it. I had to smack the stock against the ground (holding the barrel) to get my stock off. Tried using a dowel and hammer to work the stock out from the inside of the receiver to no avail. Only way I got my stock off was through brute force.