Gun rack

is a cybernetic implant that grants an additional pair of missile weapon slots. If the implantee also has the Akimbo skill, they will fire all equipped pistols, rifles, bows, and/or heavy weapons simultaneously whenever they use the missile weapon action. Otherwise, the game fires only one weapon at a time, cycling through them for each separate attack.

can be combined with to allow wielding up to four non-pistol missile weapons (which normally otherwise require two hands to wield).