Thanks for the reply. I am in the US, Pennsylvania to be exact.
I have disassembled the rifle. I tried moving the front sight, no luck. I believe the front sight key is in place. I have also tried to move the rear sight base, no luck there either. The pin is in place. The right side of the pin is pretty well mashed. The left side looks OK. Any chance the pin can be driven out from the left (looking from the rear of the rifle)?
During my examination, it does look like the rear sight base is not level with the knox form flat and the front sight. Being this is most likely a put together by JJCO, I think the rear sight base has been installed incorrectly.
Tom