An AUG A1 Steyr, The current ceremonial rifle for Australia. The hole is 5mm in diameter at original size. I have found this size hole to be great for attatching to a carabiner. If resizing, it is recomended to resize this to always be 5mm in diameter. When downloading, you will notice that there are two files. The file labelled 'AUG A1 Steyr Key tag' is the key tag model. If you want to use it as a model, print the file called 'AUG A1 Steyr Model'.
The top of the main body has corners. It is best to send these down to be a little rounded, as this is what a steyr should look like