IMAGE: A man uses the Adler shotgunABC NewsPosted Wed 7 Dec 2016 at 12:25pmWednesday 7 Dec 2016 at 12:25pmWed 7 Dec 2016 at 12:25pm A category D classification would mean only professional shooters would be able to use the Adler shotgun.(ABC News)ShareCopy linkFacebookX (formerly Twitter)