High viscosity oil refined to perfection for use in firearms, fishing reels and other precision mechanisms. Does not harden gum. Gives extra-long service. The Hoppe's No. 9 Gun Bore Cleaner has just what the "doctor" ordered with this old-fashioned solvent formula. Hoppe's No. 9 remains the most widely used remover of powder, lead, metal fouling and rust since 1903.
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