Yeah, those Ruger .22 autoloading pistols can be difficult to strip down for cleaning. I've had Mark I, II, II, and IV so I can't remember which was the worst. The III and IV are now in my sons' possession. I remember one was way easier than the other, I just can't remember which. I like my High Standard much, much more. Really easy to field strip for cleaning.
Enough of that... how about some .22 rifles? Top to bottom, a Remington 581 bolt gun, a Marlin 39A "Mountie", a Winchester Model 1890 pump, and a Ruger 10/22.
I actually used to compete in rimfire position matches with the 581. It's an unusually accurate example, just luck of the draw on my part in buying it. I mounted up a peep sight and went to town, actually winning a few of our indoor matches back in the '80's.
The 39A is cool in that it is a takedown rifle. It will fit into a Harley saddlebag when taken down. And talk about "yeehaw factor" - I don't think a guy could have more fun than with a rimfire lever gun. With his clothes on, anyway.
The Model 1890 is a close second place. Why no one makes a pump action .22 these days escapes me. I bet they would sell a few.
The 10/22 is old enough to be a "pre warning" example. It rode home from a pawn shop while bungee corded to the sissy bar on the very same Sportster I still ride today. I must have been just 18 or 19 years old. Rode about 30 miles up the 405 freeway that way, just a few shop rags padding it against that sissy bar. Like a boss... Try that one today...