Armory Den’s solvent traps are legal firearm cleaning and storage accessories, designed exclusively for capturing solvents during firearm maintenance and storing items essential for cleaning processes or travel, like cleaning accessories, batteries (AA/AAA to D Cell), lights, matches, or medications. Use them solely as intended and do not modify them, as alterations may constitute a felony under NFA regulations. Please follow all NFA laws, federal regulations, and state/local laws. Refer to our product guides for detailed instructions and illustrations on proper use.