I had to take my whole gun apart to get to the c3. Cause I wasn't able to remove the metal piece that sit next to the c3. I had to take everything apart to get the whole spring, hammer, and rod out. Then I was able to clamp it down and twist the metal piece off. Your is probably loose that's why you didn't have to take the whole gun apart. But for some that fx had loctite. You will still need to take the whole gun apart.
Wrong, if it has loctite you just need to torch it a bit (even with a lighter), very simple. I do not speak for just 1 impact experience. That is why I use teflon instead of loctite for that part. (hammer seat)
But thanks for that info, I will add a note 2 on the comments of the video.