i got it opened, there seems to be a "blocking block". it those not look like the on the pictures. its of a different color and it has some nice welds on it. also the switch fell off
today i took it in to get it looked at. the gun smith said that it is a fake, the receiver seems to have Hebrew on it but he said it was really a Chinese receiver. he said that "this could have been done to it so that the value of the weapon could go up".