If it is like mine, it is the tip that rattles. Try taking a very skinny rubber band and wrap it around the shaft just below the tip, where it meets the shaft, several times until it is tight. It will kind of bunch up below the tip. It won't look pretty, but it should allow the baton to seat in the closed position and form a kind of buffer, eliminating the rattle. Hope this helps.
Sorry to hijack your thread Mr10 but....
Natez...your absolutely right...I agree the ASP scabbard is pretty much crap. The sidebreak is useless. If your dept. is like mine, it is a cost issue and they buy the ASP scabbards to go with the ASP baton. I use a Monadnock holder that is much better, swivels, and allows a cross draw setup. Monadnock also has a Autolock baton that is outstanding and far superior to the ASP, but at a significant cost. We are working on getting them approved for use. Until then, I have a 26" ASP with a Hindi baton cap added. I have had the opportunity to utilize it and it is a very effective tool for stopping a threat. A well placed strike to a major muscle group has proven very effective. It is not a PR-24, but when used correctly, is effective none the less.