It may not be going into battery, or locking closed tight enough. I've notice mine doesn't chamber properly...too tight...and haven't fired it yet because of that issue.
IF...the firing pin connects enough in this position, you would get a big KABOOM and parts flying everywhere. The reciever would likely be destroyed while you are holding the gun. Dangerous!!!
I'm not sure if this is mechanically possible, but I'd hate to find out the hard way!
These are my initial thoughts on the issue. Your mileage may vary.