Austrian military trials then compared the AUG with the FN FAL (Austrian Stg 58 in 7.62mm NATO), the Czech Vz58 in 7.62x39 ComBloc, and the 5.56mm NATO FN CAL and Colt M16A1. The AUG proved to be at least as reliable as any of its competitors. It also proved to be superior in accuracy potential, target acquisition, handling characteristics, and full-auto fire controllability. In short, the AUG proved to be a winner.
And this quote from the same article.
The AUG has been carefully engineered to avoid excessive complication. It's also been engineered to provide the soldier or policeman with several weapons in one.
AUG is a system. Four different barrels fit any receiver in a matter of seconds. That makes four different weapons.
The stock covers nearly everything that can be damaged on an AUG
Do I need to keep quoting