Tolerance stacking was an issue for me - Rival Arms R-22 Precision Chassis System for Ruger 10/22 Style Actions

Chassis is almost great, biggest issue was the mating surface on the chassis where the action beds was not flat, it had the ridge of running the end mill cutter through here in multiple pass so it prevented the action from sitting solid and wanted to rock in the ridge. Generally otherwise the chassis just slight misses the mark on ergonomics of the pistol grip and buffer tube geometry, also the gap filling block between the trigger and pistol grip is almost great, but again falls short. Sharp edges all around the chassis also seem unnecessary. I really tried to like this and make it work, which someday it may, my ruger barreled action would just not sit straight in the chassis, it favored the left side of the barrel channel a lot, I'm still not certain it's the chassis or my particular10/22, so into the parts pile the chassis will go, unfortunate that it cost more than the 10/22 and it just doesn't seem to be guaranteed to fit and work. Also, the oval action screw hole in the chassis is not satisfactory to me.