This makes the Grav a real beast in long-range encounters and a perfect assault rifle for Warzone Season 6. But what we particularly like about it is the RK-7 30-Rnd Conversion, which will equip the weapon with 7.62 ammunition, which will significantly increase your damage output. The Grav has a base range of over 50 meters and it comes with by far the fastest bullet velocity in the class, and that's just in its base version.