From a post in Arthur's Hall.

The 10-22 is a great weapon. All you have to do is replace the plastic trigger housing, stone or replace the hammer, true up the trigger, fix the bolt release, replace the mag release with a better one, replace the stock and replace the barrel.

But that receiver is great.

After you strip all the PAINT off the inside so the bolt moves easier, radius and polish the rear of the bolt so it cocks easier, replace the charging handle with a larger one and use oversized pins to snug up the receiver fit, a