The usual ultrasonic cleaning solutions seem to be water-based; plain old dishwashing liquid is often suggested as useful for gun cleaning. Autoloaders are mostly easy to field strip. Revolvers... I don't have any problem with removing the side plate and grips, but how do I get the water out after cleaning? Air drying isn't practical in the humidity where I live. Dry shop air, blown on a metal surface, will condense moisture onto metal parts from the surrounding air. Is just hosing the innards out with WD-40 before using gun lube OK?