for slicing away armoured ceramite to get to the gooey geneseed centre within.
Interesting customization on the Terminator. Is that a servo-arm-mounted plasmagun?
Or killing Necron living metal, allowing the White Scars member to harvest xeno archeotech for study (know your enemy, to better defeat them)- or for barter to radical techpriests in exchange for ammo, weapons, and other materiel.
The Terminator may not be an Iron Hand, but he must be lobotomized to be foolish enough to reject the ludicrous deals Ferrus Manus' sons have with the AdMech. (Incidentally, you now have justification for Land Raiders with overcharged engines allowing them to keep up with your bikes.)