From the 1960's 1990s West Germany made a lot of cheap handguns for the American marketplace. Some of these were single action western style .22 revolvers.
Several different companies made them.
Can you find any other writing or markings on this gun?
If not , at least post new & better pics, some better quality close-ups of the hammer,
the rear sight, and the cylinder itself after it's removed from the frame.