I will assume that we are talking about an AR-15/M-16/M-4 type weapon.
"cleaning the gas chamber" is chilling, just the history of the fact...
I run my AR-15/M-16/M4 type weapon's BCG wet with Mobile One. This works well for me and keeps the gunk flowing. After an extended shoot, I break down the weapon, pull the BCG and take it apart (I don't remove the extractor or ejector or any springs etc.). The BC, bolt, firing pin and all goes into a cleaner with 'Hoppies Number 9'.
The 'cleaner' is a cheap denture sonic cleaner that I bought on line for $7 or $8 dollars. It gets new batteries and runs over night, well, till the batteries run down. In the morning, the 'Hoppies' is shot, a thick sediment is floating at the bottom of the cleaner and all of the parts are quite clean. No, not spotless, but close enough for me. A quick brushing with an old tooth brush and put everything back together and hit it with Mobile One.
I don't worry with the gas tube. Anything in it will soon be blown into the gas key and BCG.
I hope this is along the lines of what you are looking for. It works for me and is both cheap and easy.