Halo on Twitter: "Smash your opponents with Gravity Hammers in Grifball or attack the core in Warzone Assault. These two action-packed modes are now live in Halo 5! https://t.co/neMWexHNgq" / Twitter
Halo - Pick the enemies out of your Gravity Hammer and get back into the fray - Grifball has returned in Halo 5 with Double XP! | Facebook
Halo 3: Gravity Hammer | commorancy | Flickr
Halo 3 - The Gravity Hammer by Staticblaze on DeviantArt