As stated, you can do preatty much everything yourself. I am thinking about getting my secon 10/22 because I was so happy with the first one.
Its preatty easy even to work on the trigger with a file and a bit of sandpaper, a dremel tool, and some polishing compound. I worked on my trigger and got it down to about 2 pounds with factory parts. I have a skeeters kit that I use though, otherwise I would use it.