Revolvers can be cleaned up easily, but not in the middle of a life or death sitch. A stiff paintbrush or toothbrush is indispensable for that job. In the field, rinsing in water (pond, river, bucket, etc) would be fastest.
I locked up a S&W M19, Colt Trooper Mk3, and Ruger GP100 tighter than a drum with just a quick dip and scoop in the box. Didn't even need any shaking.
Playground sand got into every hole and cranny, and stuck to every spec of lube.
It took a couple of cans of GunScrubber to get them running again.
Every semi-auto dropped in the box that day ran like a champ except for a 1911 that had exposed grease on the chamber hood. A scrape with my thumb nail got it running again in about 5 seconds.
And one night at the beach my S&W442 never left my pocket, but the next day was virtually frozen. And it barely had any sand on it.
"Obama has ordered the launching of more Tomahawk cruise missiles than All the other Nobel Peace Prize winners combined."