dont know if there is any difference , but i ran a 6gt in my AX and its no issues whatsoever. idk if you can just grind the lip off the front to make it the same as an aw.
See the same thing in ATX rifles which have the AX mag.
Seems rifle to rifle difference though. Some say they seat 6gt all the way to the rear, most say they have to have them forward though.