In celebration of Treyarch’s Call of Duty: Black Ops 2 and of the one-year anniversary of Call of Duty: Modern Warfare 3, Infinity Ward and members of the Modern Warfare 3 team are turning double XP and double weapon XP on for the duration of the weekend.Infinity Ward recently Tweeted, “Double XP/Weapon XP are now live in #MW3. Make sure to congratulate @Treyarch for their launch of #BlackOps2 this Tuesday, Nov. 13th!”To get the latest on Black Ops 2, make sure to head on over to our dedicated page and keep an eye on MP1st as we celebrate it’s launch in only a few short days on November 13.Having been a whole year since the release of Modern Warfare 3, what have been your favorite moments, maps, weapons, etc? Are you going to be sticking to MW3 even throughout the release of Black Ops 2? Tell us below!