Tips To Penetrate Armor on a Gun Build?

I'm running a gunkin build prepping to go into Bethesda Susa. I have two jacked Laser Chain Guns, two jacked Eigenrifles, and a jacked force bracelet. All being powered by an onboard bio power plant cybernetic.

I don't think there is anything in Susa that would be a threat because I have a permanent force bracelet. But the cragsmench refuse to die! None of my weapons can cut through their armor unless I score a critical hit so killing one takes a long time!

Is there any way to up my penetration with guns?