A few more interesting homemade submachine guns have appeared among firearms seized by West Australian police.
Below is a version of the Bill Holmes home workshop SMG design:
This example is a copy of the S&W M76 and accepts Sterling SMG magazines.
This interesting looking example slightly resembles the Australian F1 smg, but with the magazine position reversed and what appears to be an integral suppressor.
An obligatory P.A Luty expedient machine pistol also makes a return: