Yup and if you dig, back in the early days they setup a support system inside each FOB to take care of little issues. When the sweed k was popular back then I remember reading about having on hand springs and the like to service them. You can't be down, you don't want it to stop working when you need it working, so good service is key. If you have read any of those SOG books that are so popular you can catch glimpses of this, they are the only ones that service their weapons. I remember reading about them trading range time with the "not normal" weapons for stuff off a USN base. I can't remember what book that was in, but I do remember the navy guys offering to clean the weapons they got to shoot, I remember a short RPK was popular in the story.....and the guys said, no don't worry about cleaning we can take care of it. This same book (again I think) also put to bed the myth of using diesel to clean the guns, and guys would basically shower with them. Some fantastic stories. I just went back to look and I want to say the book was whispers in the tall grass....but again it has been over a year that I read it and I could be getting it mixed up with another.