Slip 2000 7oz.Carbon killer in a container FEATURES:-For extreme baked on carbon cleaning-Dissolves carbon & lead on contact-Designed for soaking metal parts w/ baked on carbon-One of the only reusable products on the market-Should not be used to clean the outside of your gun Other Features: Can be reused serval times dissolves carbon/lead on contc non-flammable, non-hazardous biodegradable perfect for ar-15 bolt carrier