HS-Armory Barrel Scrapers 5pk

These barrel scrapers are designed to remove containments that normal cleaning rags cannot. These are particularly useful for removing the build up plastic residue many BB brands leave behind over time. They come in a 5 pack but can be cleaned and reused many times. They are made from nylon so are fairly solvent resistant and still soft enough to not damage barrels. Here is a video with some more information.