Hello, I’ve been a long time reader, first time post. I am in the process of purchasing an mp5. It has a Fleming sear, but other than that I don’t know it’s history. Unfortunately, I won’t be able to get history from the previous owner. I know this is a broad question to ask, but what steps can I take to start the process of identifying the origins of the host mp5 that carries this sear? This is a big personal purchase for me, and I’m willing to do the work/research to figure out the history; being pointed in the general direction to start this task would be much appreciated. Thank you for help in advance.