🛡️ Keep your gear pristine with HOPPE'S No. 9! Perfectly sized for storage and portability. A go-to choice for gun enthusiasts since 1903. Rapidly cleans even the toughest residues. User-friendly formula for hassle-free cleaning. Designed with a secure cap for peace of mind. Worldwide favorite since 1903 Ultra potent formula 16 oz bottle HOPPE'S No. 9 Gun Bore Cleaner is a powerful 16 oz cleaning solution designed for deep penetration and rapid cleaning of firearms. With a child-proof cap and a legacy of trust since 1903, this cleaner is a must-have for any serious gun owner.