
Originally Posted by
Great-Kazoo
Put wet cleaning patch in the chamber, once you separated the upper & lower. For this operation to minimize grit elsewhere in the upper, stick a wet (oil or gun cleaner) q-tip end or pipe cleaner in the gas tube.
.Blow off with air, run water over them, then blow off with air, moving nozzle from chamber towards back of receiver. Finishing up with cleaning product of choice. After the upper & lower have been cleaned to your satisfaction, remove cleaning patch from chamber. May require a few times to get it all.