You can pick one up at Wal Mart for $35, and use it for many other places in your house and garage.

I dont konw why my idea is recieving any negative pressure, it may be one of those things a guy needs to try himself to understand just how good it works.

You can blast hotterthan boiling steam down your barell, and clean more junk out quicker and easier. You can blast the crud underneath your scope as well without removing it.

The bucket of soap and water may work for people, but this is less of a mess, cleaner, and more effective in my opinion. Give it a try.