Yep Motorola makes an APX6000R, and an 8000R as well. Not sure if the HXE has taken over for the 8000R though. The real “rugged” version of the 6000 would be the 6000XE. As far as I know, the “R” is just a standard cased radio that is submersible ( and available in a few colors like green, yellow, black etc )