Goop Orange hand cleaner, and a soft nylon brush. Take it apart, spread Goop on brush, scrub, rinse under hot water. Quick, cheap, easy, does not set your hair on fire, blow up house, eat holes in your pants, or make Home Sweet Bunker smell like a refinery.
For the chamber, a .50 cal bore brush, cleaning rod, electric drill. From the breech, Goop the brush, chuck rod into drill, insert into chamber BEFORE spinning drill (or decorate ceiling with Goop). Spin with drill for 30-45 seconds, flush with hot water.