Mark. 31 Heavy Machinegun- Eighty-two pounds of high-powered weaponry, firing .50 BMG from a backpack-mounted feed system. The Mk. 31 is unwieldy even for those all borg'ed up but its ability to chew through cover, light vehicles and most definitely people make it worth keeping around. Fires a variety of rounds, all of which will absolutely ruin someone's day.
Militech Crusher- The Crusher's small size makes it convenient for use indoors while its eight-gauge payload and twelve-round magazine make it deadly. It's Zhenya's go-to when the situation warrants some semblance of subtlety.
RT-46 Burya- Zhenya's sidearm from her SovOil days and one of the few tech-weapons she cares for. Low-capacity and most certainly not low profile but makes up for these deficits with its sheer power. If it doesn't drop dead after getting shot by a railgun Zen probably shouldn't have shot at it in the first place.
"Rezat" Officer's Sword- Her father's official parade sidearm from his days as an officer in the greatly diminished Red Army, it was given a very unofficial nickname when she inherited it. The titanium blade is sharp, durable, and lightweight while the decorative grip contains pressure sensitive circuitry. A squeeze of her hand sends a current of around eight thousand volts up the blade.
Even if she can't pierce their skin that much juice can inhibit a chromed up opponent just fine.