I had one and I put on a 3-9x Simmons scope on mine.
You do need to get the right height rings to clear the front sight.
I think that's as much scope as you can put on one.
But takedown is no longer a possibility.
So factor that in if you still need it to takedown.
The Simmons was really nice and clear and like $80.
I've sold all my semi auto 22's and only own levers and pumps now.
Faster to reload and can shoot anything.
I love iron sight shooting If you're going to stay with irons, and I don't blame you a bit and it *will* be much more portable, check out Skinner sights as Cottonsacks said above. Also, Williams and Tech Sights make some pretty fantastic stuff.
I'd also vote for peep sights. I like the Ruger take downs as camping and hiking guns, and just can't see shooting far enough on a camping trip to need a scope. Guess I'm too lazy to walk 100 yards to retrieve dinner...
Thanks everyone for the suggestions. I took the gun with stock sights to the range the other day and was very pleased. At 25 yards, I shot a group of 50 rounds that I could cover with a quartet. I know that out to 100 yards or so that's not great, but with my eyes there is no way I'm taking shots at squirrels (with open sights) at much more then 50 yards anyway. The price of ammo is getting crazy. I remember a time not so long ago when $10 would have you shooting .22 all day. Not anymore. It cost me $10 a box. (50 rounds, federal target loads.) It's enough to make you want to call the cops for highway robbery. I now understand why people are waiting in line at big box stores to get their "daily allotment" evin if they aren't shooting daily.
Anyway, I digress, thanks again for the info and tips.
I've got 2 now. I bought one with the full manlicher stock a while back. A friend of mine and I brought his 12 year old daughter shooting and the rifle was too heavy for her. The main reason for buying the 10/22 was to teach my twin boys to shoot at a nice young age. I got to worrying that the riffle may be to heavy for them so I got the takedown version with the synthetic stock. Much lighter, I think that by the time the boys are 5-7 (depending on the level of maturity) the lighter gun will be just fine. Until then it's a great pack riffle.