I have both an old style RAR .223 like yours, and a newer RAR with the AR magazine setup. The bolts are different, with the AR bolt having cutouts to clear the feed lips of the AR magazine. I keep the original one in MI and have the AR one in AZ, where I winter. I believe the receivers are different also but am not sure about that. The bolts are different for sure. It won't be a simple conversion and probably isn't practical. I can't speak to the AI conversion, except that Ruger did make a kit to convert ONLY the original rifles with the removable mag section in the belly of the stock to AI magazines. It won't work if the mag section is non-removable.
Last edited by wildhobbybobby; 12/30/21.
