You could also look into a Mossberg 702 Plinkster Bantam model. I bought one for my daughter. They go for about $150.
The extra 10 round magazines go for about $17.
You can also get a set of Tech Sights that will fit it.
I fixed it up with a set of sling studs and a GI sling.
It is a very accurate little rifle. She shoots very well with it. I can put all five in the one inch square on the drill targets with it. It shoots just as good as my wife's 795 or my 10/22 which are both set up as training rifles.
I believe that it might meet your needs. It is a very nice marksmanship training rifle in a small package.