For perfect blackening of front sight, rear sight and barrel.To be used like a lighter to darken the desired parts.Warning!Keep away from children. Upon igniting of the lighter and adjusting of thefl ame (if applicable) keep away from face and clothing. Contains fl ammablegas under pressure. Do not expose to temperatures exceeding 50 C.Protect from sunlight. Do not pierce or place into fi re. Ascertain after eachuse that the fl ame is extinct completely. Do not keep lit for more than 30seconds.