homemade copy of a commercial version of this bipod I remember was offered in North America back in the '90s.
Would that be the "Parker-Hale" bipod first seen on the M-85? I have a couple of "clones" in the "bipod box" here in the crypt.

The original is a nifty little unit that clipped onto a spigot mounted in the front of the M-85 fore-end.

M-85s seem a bit scarce in Oz.