Since we're into modified 10/.22's, here's a much cheaper alternative:
This is a standard CRR carbine, with a Green Mountain 20" fluted stainless sporter barrel and Bushnell 3x9. Cost on this one is closer to $475. Be warned that Green Mountain has a VERY SERIOUS problem with putting way too much chamfer on the breech of their barrels. This one was just plain dangerous as it came from the factory. I sent it back to them, and they fixed it a little, but I will personally never ever deal with them again. It does shoot remarkably well, and weighs about 6 lbs.
This one has had my own trigger work and bedding. It shoots just about to the practical limit of the caliber, bouncing empty shot hulls around @ 100 yards with boring regularity. Barrels of equal quality can be had from a long list of other companies, like tactical solutions, Kidd, Whistle Pig, etc...