I received a used compact from a friend recently. He told me he doesn't have the screw driver and that I'd need to get some screws because one is missing from the rail by the thumb stick. I want to purchase a screw driver and spare screws but I have to put in a Order number (I don't have it and neither does my friend) to purchase said screws. Is there some way I can order these screws without the order number or am I out of luck?