Klawz wrote:That is the Mark V Heresy Armor, named so because it was popularized during the Horus Heresy. Due to the rebelling Ad Mech forge worlds, the Imperium was forced to develop a stop-gap to deal with the fact that many of their manufacturers and supply lines were gone. THeydeveloped the Mark V, which, instead of using the stronger alloys in the earlier marks, simply made them into metal studs so they coulld retain similar levels of protection without using as many resources...
Some of this.
The basic idea was they had lots of low grade materials, so made the armor of it, then added studs of harder material to help protect.
Similar to studded leather armor in principal.