Thanks. I spent hours researching this. I have an email in to the gentleman running the program. Maybe I can rent a CT legal one down there. Otherwise I'm SOL. I had been looking forward to this class for at least two weeks.
I take it that your from CT? As best I can tell, you are allowed the detachable magazine and only one other feature, which seems to me has to be the pistol grip. Anything else, such as telescoping stock, flash suppressor, bayonet lug, etc makes it illegal (Two or more things beyond the detachable magazine).