depends what type of tip you have on... some guns have a removable tip in which it is an extra piece that can be pulled from the barrel with some force. If not, then it is a blaze tip, in which the slide is painted with the orange tip. In this case, you have to remove the paint, as it is not a seperate piece... i use acetone also, although small amounts at a time, if your gun has a coat of paint already underneath the orange tip
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