Kay Vess has a modular (and fancy) blaster

During the gameplay video released on June 12, we see Vess fighting off baddies using her trusty blaster. But we also see her switching its firing modes on the fly, at one point letting her zap an enemy shield. Ubisoft further explained that you’ll be able to find and upgrade new blaster modules that will give you more options during combat.
Ubisoft also says Kay Vess will learn and upgrade new abilities throughout the game, becoming a better and deadlier scoundrel as players progress through the open world.