One of my later questions to Aussies was whether a .300 Blackout handgun has ever been approved for anyone in Australia?

After seeing the Ruger Charger in .22 RF has been allowed in Australia, As a handgun.

As these are basically shorter barrelled AR15 type "handguns" I assume Police would have fits and if a PTA was approved, a 4am tactical police raid could be expected shortly after when the "mistake" was discovered ...

It would have to be able to approved for a target shooting competition. I could imagine a .300 BLK "handgun" could be used on silhouette steel targets,