Absolutely. Did you say you have AOW or that you would like to take AOW?
The entry point to GUE for any certified diver is the GUE Fundamentals class. This class can be taken in a recreational gear configuration with a single tank, backplate and wing, and long hose + necklace and wetsuit or drysuit. The focus of the class is team work, situational awareness, positioning in the water, buoyancy, fin techniques. You'll practice simple skills like regulator switches and mask removal while hovering in trim, SMB deployment, ascents, gas sharing - all while maintaining/building situational awareness of your surroundings, your gas, depth, bottom time, buddies etc. You'll also learn simple and efficient communication with hand signals and passive communication with lights. Also you'll go through basic theory in a practical way, to give you confidence to plan and execute dives with a buddy or a team.
Fundamentals does not expand your certification limits, but trains you to be a better diver and makes you eligible for other GUE courses, recreational as well as technical. If you want to continue with a class that is equivalent (but more in depth) to AOW, that would be the REC2 course which certifies you to 30m (if you're not already AOW).