Funny! I was going to give a Range Report on it today.
So, I took the 15-22 out on my previous outing, and shot a lot of rounds through it, but I did not clean it.
Yesterday, we took it out again, and while we were working on zeroing new RDS for 2 carbines, I "loaned" my 15-22 to a man and his 3 sons. They were trying to sight in a scope for a Marlin 60 .22 rifle.
They shot the snot out of my 15-22.

I suspect they put at least 400 rounds through it.
When they handed it back, it was nasty dirty, with goo coming out of the receiver.
YET, I still put about 150 rounds through it myself, and it never jammed. It cycled every ammo we used (4 different types) with no issues. That could NOT be said of the Ruger 10/22 that did not like the non-rounded HP rounds I had.
Later when we got home, it was as filthy as I have ever seen a rifle. When I took it apart and slid the bolt/hammer back on its rails, you could feel the grit. It had a film of residue goo that was all built up on the bolt face. Eww.
And it didn't stop running..!
Pros:
* FUN/cheap To shoot!
* As close to an AR as you can get
* Very reliable, shoots any ammo.
* Magazines are solid, no slop, and a breeze to load.
* Cons: Usually runs about $450 up.
I have and suggest that you buy it and install a fore grip.
I have always said that everyone needs a Ruger 10/22. Well I have to adjust that. They also should have a M&P 15-22.
It prepares you for the AR platform.