How many here leave their Ruger 10/22 as is from the factory, except for maybe adding a sling and/or scope? Just wondering. I bought a couple standard birch stocked 10/22's last week, (one for my son and one for me), added a sling to each rifle and thought I'd leave them just as they are now. My thinking is to leave these rifles setup (as they are now) for the "CMP Rimfire Sporter 'O' Class" type competition just in case we'd ever get a chance to attend one of these type of matches. We have .22 Rimfires that carry a sling, bi-pod, and scope, so we wanted to leave these 10/22's stock from the factory (aside from the sling) so we can practice the 'O' Class disciplines. I think these would be good rifles for the CMP Rimfire Sporter Competition.