AR15s and Ruger 10/22 can be bottomless money pits. I've got a couple of near $2k (with optics) AR15s and a couple of $1k sub-MOA 10/22s. The problem is that they're like potato chips and it's hard to stop with just one.
6.8SPC with a Burris XTR 1-4x24 in a LaRue mount.
5.56 with a Eotech 557 and a LaRue "Po-Boy" magnifier and mount bundle. The Po-Boy magnifier is a Hensoldt 2.5x sight
off a German antitank weapon that's been modified for AR15 use.
My money saving "training tool" M&P15-22 with a Weaver V3 1-3x20.