The Ruger is not hard to completely disassemble, though I don't recommend it unless a part needs to be replaced. Otherwise, best to flush the crud out with a good spray penetrant or dunk it in a sonic tank, and otherwise leave it alone.
If you feel you absolutely must take it all apart, don't start by driving out pins, because some of them don't drive out. For example, the trigger pin is held in by either an E ring (old model) or the bolt stop spring (new model). Trying to drive it out will bend the frame. Also, don't mess with permanent assemblies, like the recoil spring guide and the mainspring housing.
Jim