going back to i am calebs photos of how the firing pin goes into the slot in the chamber and my comment about these being able to slamfire and fire out of battery. The design is so that the hammer cannot strike the firing pin until the bolt has cammed into battery. If for some reason the round stops short of going into the chamber the firing pin itself under its own inertia can strike the primer with enough force to fire the gun. At a jcg match i was firing in at a local club last year we had a man have a case separation just before the datum line allowing the next cartridge to go in all but about 3/16 of an inch. The round went off not supported by the chamber and broke the extractor on the bold, the clip latch, follower, follower arm, and oprod catch, along with a ruined pair of safety glasses and a facial laceration. We used cerosafe to extract what was left of the cartridge from the chamber and found it firmly seated into the neck of the broken shell
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