Maybe i need to clarify a little better. When the trigger is pulled double action style, the hammer only comes part way back, rather than all the way back, as if something is hindering the rearward travel of the hammer, and so the hammer never gets far enough back to get released to go forward to hit the firing pin. I wish i had the gun so i could take it apart and look at it......
Funny thing is that it will fire single action style, and i think it will also cycle and pick up the next round and fire that too.