Call Of Duty: Vanguard and Warzone recently received a new seasonal update that brought two new guns to the game. While these new weapons add to the variety, some guns, like the MP40 SMG, will remain a staple of Warzone's meta.
Players can unlock the MP40 SMG by reaching level 16 in Call Of Duty: Vanguard and Warzone. Ideally, you want to grind Vanguard's multiplayer mode to level up quickly. Players can level up this SMG in Warzone, too, but that will take a while before all attachments are unlocked.
Related: All new killstreak, perks, and equipment in Season 2 of Call of Duty: Vanguard

The MP40 SMG is one of the best weapons in Call Of Duty: Vanguard and Warzone, and players can customize their loadout after unlocking attachments. The following attachments work best for Warzone:
- Muzzle: Recoil Booster
 - Barrel: Krausnick 317mm 04B
 - Optic: Krausnick ISO1M
 - Stock: Removed Stock (for hip fire accuracy)
 - Underbarrel: Mark VI Skeletal
 - Magazine: 7.62 Gorenko 45 Round Mags
 - Ammunition Type: Incendiary
 - Rear Grip: Polymer Grip
 - Proficiency: Brace
 - Perk 2: Quick
 
The MP40 is undoubtedly the most popular SMG in Call Of Duty: Vanguard and Warzone. Unlocking and leveling it up quickly will allow players to choose from a range of attachments. While it shreds at close range, the MP40 can be powerless in long-ranged encounters. Make sure to run an Assault Rifle or Sniper as a secondary while using this weapon.
Wondering how to unlock the new weapons in Warzone? Check out How to unlock the Whitley and KG M40 in Call of Duty: Vanguard and Warzone on Pro Game Guides.