The Komorex cannot use ammo mutation mods.

[WaltzingPhantom]

The Komorex does not currently have the option to equip the Sniper Ammo Mutation Mod despite being a sniper weapon. While it does have innate ammo mutation and can use Vigilante Supplies, it's not as effective as the actual mod. The Lenz, another weapon with innate mutation, does have access to Sniper Ammo Mutation, as well as Arrow Mutation. If one of these situations is a bug, I hope it gets fixed simply for the sake of consistency. There may be work arounds, but bugs are still bugs.