Editing Grav-Weaponry (section)

=Special Rules=
In 7e, all grav weapons have the Concussive and "Graviton" rules. Instead of comparing Strength to Toughness when rolling to wound, the firing player (you) instead rolls the target's armour save, down to a minimum of 6+. For example, if the target has a 2+, that's what they get wounded on. (Go Orks!) When rolling to Pen on vehicles, 1-5 does nothing and a 6 immobilizes the vehicle and takes a hull point (so an already immobilized vehicle loses two hull points). Graviton weapons have no effect on buildings. All grav weapons were also AP 2.

8e nerfed this down to causing D3 damage against anything with a 3+ armour save or better along with S5 AP-3, and quite frankly the things deserved it. Now that immobilization doesn't exist and the gun itself is overshadowed by the improved plasma weapons, it's gone from being a gamebreaker to a bolter that's a little bit better against MEQs.

They come in four varieties, similar to the way plasma weapons do.