Who all uses one?
I have one and it's awesome. It's big enough for two handguns. It takes so much of the work out of cleaning the internals.
On auto, I just remove and strip the slide. For S&W revolvers just remove the grips, crane, and side plate. Other revolvers just field strip.
While my unit has a heating element, the amount of water it holds takes time to heat up, so I put hot water in and then run it. It keeps the water hot. A cup of Dawn dishwashing liquid, set the controls and let it run.
[Note: DO NOT let the metal basket come in contact with the firearms. It can damage some finishes. I use a perforated plastic basket inside the steel basket.]
The guns come out so clean they need to be sprayed or coated with some type of oil or unfinished parts can start to rust immediately. I drop them into a bath of Ed's Red and let them soak.
Here's my sonic unit:
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