I've recently replaced the trigger return spring on my kwa m9 ptp with the real steel 92fs trigger return spring hoping it would improve the trigger weight and feel. Which it didn't. Little did I know that it was more about the hammer spring. I observed the hammer spring housing in my pistol but couldn't determine if it was an accurate replica that will fit the real thing. What are your ideas? And I'm not talking about parts withstanding the added force or anything, so warranty voiding is ok, I'm just asking if it will function.