I have a 10 inch Bull Barrel Stainless Steel Ruger Mark II. It's a magnificent 22!
I bought this gun for my wife about 25 years ago, and I wouldn't give it up for nothin'. I can put 10 rounds in a dime at 25 yards with it.
I did add Hogue grips and a HAKKO Red Dot sight to it about 5 years ago.
I'm reasonably sure I've put close to 50,000 rounds through it... It is (without a doubt) a bench-rest autoloader, it's surprisingly heavy.