JaPes,

You put together a nice list of cleaning tools, should help lots of people.

The carrier scraper tool end of the CAT 4 though, they stole my idea

I've been using my own "carrier scraper" tool for about 25 years, looks a lot like the carrier scraper tool end of the CAT 4. Machined it from a piece of steel myself many years ago. On the opposite end of my own DIY tool is a curved corner that fits the curve in the bolt that performs the same function as the bolt scraper tool end of the CAT 4. Guess i'll drill a hole in mine now for the firing pin