You're looking for a "job shop". There are small machine shops all over the world that can do this for you, but don't expect to get mass production prices... it

You're looking for a "job shop". There are small machine shops all over the world that can do this for you, but don't expect to get mass production prices... it's going to cost A LOT. You're paying for someone to figure out how to make it, set up any jigs, cut materials, etc. I suggest you google "machine shop online"