If the story I heard some years ago about the ADF's acquisition of the Steyr rifle is to be believed, Bushranger71 has a point in his second paragraph.
My source (who was in a position to know) said that manufacturing the rifle in Australia was four times as expensive as buying the rifles directly from Steyr, and the jobs (in Australia) it created were almost all short-lived, (but, of course, most importantly, it allowed a senior politician to have his moment in front of a bank of cameras telling the electorate about all the jobs he'd created).
He said if they'd bought the rifles from Steyr and bargained (as part of the offsets in making the purchase) for a maintenance facility to be established in Australia, (to do maintenance on Steyr equipment from other areas as well as Australia), it would have meant fewer jobs, but they'd have all been long term ones, and saved the Australian taxpayer millions.