In my opinion, it is required. It may depend a little on your barrel and paint. I find when I get a breach break, the paint finds its way into a lot of little areas including on the bolt that can not be squeeged out very well and will cause you to loose accuracy. A thicker paint may not be as bad as I use Nelson Anarchy and it is a pretty thin paint. I pull the barrel, eye pipe and support piece and the bolt as soon as I get to the staging area whenever I have a breach break.