A good solvent is cheap paint thinner from Walmart.
All you need to do is stand there and watch it in case it does catch fire from a spark.
Paint thinner is not extremely flammable but you do have to pay attention, you can't just walk off to answer the phone or get a drink.
Run the tank a few minutes to get the air out and to heat the solvent. Ultrasonic works better with warm solvent. You can stand the paint thinner jug up in a sink full of hot water to warm it faster.
UC works reasonably fast, depending on what the fouling is. Greases and oil literally boil off fast. Other fouling can take longer.
Usually 30 minutes is all I've ever had to do, and you can speed it up by pulling parts out and brushing with a solvent proof toothbrush like the double ended M16 cleaning brush.
There was a problem of some sort with the First Gen S&W M&P and the "pellet" in the trigger assembly but I can't remember the details.
Do a search on this forum and you should find some details.
Or, make a new post up in the auto pistol forum area and ask.
UC will not do a good job of cleaning a bore. You still have to brush and patch it with a bore solvent to get the copper, lead, and carbon fouling out.
A few posts down is another ultrasonic thread. Read that, it'll answer most questions.
A cheap Harbor Freight ultrasonic unit will let you experiment to see if it's of real benefit to you. They usually don't last a long time, but you'll usually get your money's worth out of it.
If you like UC, then you an invest in a better quality unit.
Last edited by dfariswheel; 01-08-2018 at 08:50 PM.
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