A brand new season of Call Of Duty: Modern Warfare II and Warzone is upon us. Season 6 is the final season before the launch of Modern Warfare III, and Activision is doubling down on the spooky Halloween theme with a midseason update coming in a few weeks that will kick off The Haunting event.

Meanwhile, Spawn is the new Battle Pass Operator and will be joined later by Skeletor, two Diablo IV characters, Ash from The Evil Dead and more horror-themed content.

But along with new maps, the most important thing any Call Of Duty player needs to know with the launch of a new season is what new weapons have been introduced and what big changes have been made to their favorite guns. The meta, as it’s called, will change significantly with this update.

Some of the big changes are buffs to the Minibak—the game’s most piddly SMG—in both Multiplayer and Battle Royale as well as a serious nerf to the Kastov 762, which has been dominating Warzone lately. The ISO Hemlock and Cronen Squall see even more nerfs after being hit with downgrades pretty much every season, while numerous guns across all categories have been buffed. The 9mm Daemon handgun and the burst-fire Lachmann Shroud both take hits with this update, likely to pave way for the new guns being introduced.

One surprising change is a buff to the auto-shotgun the MX Guardian, which is seeing some major increases to damage in Warzone. Another shotgun, the Lockwood double-barrel, has received a new attachment. Read on to learn everything you need to know about the Season 6 patch notes for Modern Warfare II and Warzone.

TR-76 Geist (Assault Rifle)

“A hard-hitting bullpup assault rifle chambered in 7.62 x 39 mm. Highly modular, this weapon system can be adapted to fit a wide range of tactics and combat scenarios.”

You can obtain the TR-76 Geist from the Season 6 Battle Pass.

ISO 9mm (Submachine Gun)

“Sweep the battlefield clean with the high fire rate, maneuverability, and exceptional steadiness of this 9mm SMG.”

Obtained via the Season 6 Battle Pass.

Dual Kamas (Melee)

Cut down your enemies with each swing of these curved and deadly blades.

Also obtained through the Season 6 Battle Pass.

The first half of these weapon balancing changes apply to both Warzone and Modern Warfare II unless otherwise noted. There’s an even longer list of changes to Warzone’s arsenal below that.

» Shotguns «

Lockwood 300

» Submachine Guns «

Lachmann Shroud

Minibak

» Assault Rifles «

Kastov 762

FR Avancer

» Battle Rifles «

Cronen Squall

Lachmann-762

SO-14

TAQ-V

» Shotguns «

Bryson 800

Expedite 12

MX Guardian

» Marksman Rifles «

Tempus Torrent

Lockwood MK2

SA-B 50

SP-R 208

The following nerfs and buffs only apply to Warzone.

» Assault Rifles «

Chimera

FR Avancer

ISO Hemlock

Kastov 762

M13B

M13C

M16

» Battle Rifles «

Cronen Squall

FTAC Recon

Lachmann-762

SO-14

TAQ-V

» Handguns «

Basilisk

FTAC Siege

GS Magna

P890

X12

9mm Daemon

.50 GS

» Shotguns «

Bryson 800

Bryson 890

Lockwood 300

MX Guardian

» Sniper Rifles «

Carrack .300

Signal 50

SP-X 80

» Submachine Guns «

BAS-P

Fennec 45

Lachmann Shroud

Minibak

MX9

Those are all the weapon changes in Season 6. Many other bugs and problems have been ironed out as well, though I suspect a number of new issues will arise as is always the case with a major update. Here are all the other fixes in the Season 6 patch notes: