Good luck on your endeavor. AR 10 is the Eugene Stoner 7.62. Choose a caliber and then you get to pick and choose parts for a build or buy a complete rifle. The nomenclature gets confusing but the rifles are similar.
Recently retired and living in Florida. I've become interested in shooting rifles once more, and look forward to learning to shoot well. I have begun to build my own rifles. I am currently building a 6.5 Creedmoor semi auto, then I'd like to build a bolt action.