On Sun, 27 Nov 2016 08:27:32 -0500, Poquito Loco
wrote:

If you get sand into a mechanism, you have to remove all the grease to clean it. The ultrasonic bath
excels at this task. My guns have thus far been spared, but I've used it to clean bicycle chains and
freewheels, as well as carburetors.

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In basic training we used to get sand in the M-14 trigger mechanism
all the time. The unauthorized but effective cure was to wash it
under hot soapy water, rinse, dry, and re-oil immediately.