Safely removes all types of fouling – carbon, powder, copper, lead and plastic wad residue.

Solvent clings to and penetrates neglected or fouled bores.

Contains no highly toxic ingredients and is safe for use on steel. -

See more at: https://www.birchwoodcasey.com/Cleaning-and-Maintenance/Cleaning-Maintenance/Bore-Scrubber%C2%AE-Foaming-Gel.aspx#sthash.Sr2y8FRL.dpuf