I have a 22 remington 597. The owner previouse to me painted the Rifle grayish green camo style( ok they tried to) I know the stock is plastic and the paint is coming off in many places. I want to clean this paint off. What do you recommend I use to take the paint off the barrel and plastic stock? I have not tried anything yet as I do not want to ruin the metal and plastic. Any ideas as to how to clean this crappy paint off?