Modern Warfare 3 day 1 patch fixes crashes and makes significant weapon balance changes

techradar.com:

Call of Duty: Modern Warfare 3 left its early campaign access period and officially launched today (November 10). However, players diving in should make sure that they also get this vital day-one patch downloaded.

Outlined on the Call of Duty blog, the patch offers fixes and changes to the campaign, multiplayer UI, weapons, maps, and more. Crashes when loading into campaign missions have been fixed, as have “UI-related crashes” when using the menus. Most notably, changes have been made to 13 weapons and two conversion kits, so if you found a favorite during the beta period, you’ll definitely want to check that your weapon of choice still operates as you remember it. 

The SVA 545 assault rifle now has decreased recoil, a slightly increased lower-torso damage multiplier (an increase of 0.1), an 8% boost to its rate of fire, and a significant 19% increase to bullet velocity. The MTZ-556 assault rifle has been given a similar bullet velocity boost at 18%, as well as an increase in maximum damage range (up to 27m from 23m). Meanwhile, the MCW assault rifle has also been given an 18% bullet velocity boost, but, while its minimum damage has been increased by 13%, it now has increased recoil during sustained fire. 

Otherwise, the Striker submachine gun has been significantly nerfed, with a 14% decrease to maximum damage, an 18% nerf to near-medium damage, a 7% decrease to far-medium damage, and a 5% nerf to minimum damage to boot. However, the aim down sight time has been reduced by 4%, too.

Holger 26 light machine gun users will be pleased to know that the weapon now has a slight buff, with a 13% increase to bullet velocity. It’s a mixed bag for the Pulemyot 762 light machine gun, though, which has been given a 16% bullet velocity