Korvidari Bolts

When you give a model this Relic, select one bolt weapon (see Codex: Space Marines) that model is equipped with. When that model is chosen to shoot with, you can choose for that weapon to fire a korvidari bolt. If you do, when choosing targets for that model and when choosing ranged weapons, that weapon’s Range characteristic is increased by 6" and it can target units that are not visible to the bearer, but only one attack can be made with that weapon