Next time at Wal Mart pick up one of them .99 cent jars of jewlery cleaner. They have the little basket in them for the rings and ear rings. Be syre and don't let your wife, girlfriend, or what ever see it, or they claim it right off the bat. Although if they have an old one you can trade them for the new one. All you really want is that jar and basket.. You can use that to soak your breech plug. And when the solution in that little jar is all filthy or does not seem to work,dump it down the toilet and just add a good squirt of dish soap or a cap full of Spic & Span liquid cleaner and fill the rest with water. It will soften all that fowling on the breech plugs, nipples, and hammer strikers. Then take that to the sink and turn on the tap. With a simple old tooth brush you can scrub that breech plug spotless. After that some Q-tips and alcohol will clean what you might have missed and also dries off all the liquids from teh rinsing you gave them after you take them out of the jar.