Ok, I've looked at it again and I can't see any other way to install the firing pin so it must be correct. The gun seems to do what it's supposed to with no ammo, but as soon as I put in a mag with bullets and pull the cocking handle back, it seems to jam before it reaches it's full forward return travel.
Can someone please tell me what the "Bolt Carrier Stopper Lever" does or what it's for? (it's on the bottom of the butt just behind the magazine). The Operation and Maintenance Manual makes no mention of it. It has a knurled finish to it so it looks like it might be something important. Maybe that is the key to my troubles?
Any ideas would be greatly appreciated. Once again I am knew to firearms so forgive me for asking what might appear to be dumb questions.