While magnesium presents some challenges to extrude, given the right controls it can be readily extruded similar to many high strength aluminum alloys, and often in more complex forms. Below you can see both historical and current examples of mass produced magnesium extrusions.

First trial of a new Class II profile using AZE611 alloy, 79:1 reduction and 5mpm exit speed.

Magnesium extrusion is nothing new.

Over a century ago (1917) photo of profile types available in various magnesium alloys.
Magnesium extrusion photo from 1930’s, this process is very well proven, but little known.
All that shines isn’t platinum, magnesium when processed correctly has a near chrome finish.
Such high surface quality is a rare sight in aluminum extrusion.