I would think that, here in the USA, guys like Aaron Little, Mike Rowe, Ken Owen, or J.J. Peredeaux might be qualified to make a guess as to safety/suitability of the action?
Surely there must be a gunmaker in Oz that would have the knowledge?
-or-
Just do the old Texan thing: "Hey Y'all, hold my beer and watch this!".....

- Mike