A cavity under the buttplate (accessed by removing the rear sling swivel) is designed to hold a compact cleaning kit.
The AUG originally used proprietary 30 or 42-round "waffle" magazines. However, the AUG A3 M2 NATO uses STANAG (AR-15) magazines. The diagram will differ significantly here: steyr aug parts diagram
The trigger pack is held by one or two cross-pins. The diagram shows they are (they do not fall out). Novices try to hammer them all the way through. Stop. They only push flush with the stock. A cavity under the buttplate (accessed by removing
The core of the bullpup design is the receiver, which houses the barrel, the bolt carrier group, and the gas system. In a parts diagram, this is often the most complex visual cluster. The diagram will differ significantly here: The trigger
Original "waffle" magazines allow shooters to visually check their remaining round count.