The game also allowed more flexibility in primary weapon choice, instead of Assault classes exclusively using assault rifles or Support classes only using light machine guns. Battlefield 3 allowed three particular customizations for most primary weapons in the game: sights/scopes, barrel types like silencers, and under-barrel attachments like grips or launchers. Back when the game came out, Battlefield 3 introduced a weapon customization system that wasn't constrained to this one attachment, one playstyle method that Call of Duty swore by.
Used to be that Battlefield was further ahead of the game in terms of weapon and equipment customization than Call of Duty was. RELATED: Battlefield 6: The Pros and Cons of a Modern Setting Battlefield 6 would do well to observe and emulate the freedom achieved with Gunsmith's implementation. Even though there's been a few examples of overpowered guns/class builds, out of almost 50 guns throughout the entire game, it's crazy to think how balanced the weapon pool is with Gunsmith. Gunsmith emphasizes Call of Duty's desire not to compromise player preference with improper balancing. Older Battlefield titles like Battlefield 3 had customization that was the closest thing to Modern Warfare's Gunsmith before it existed. Then, Gunsmith in Modern Warfare brought weapon customization to a new level. Battlefield would eventually implement some broader aspects of weapon/equipment customization as a result, but never compromised on its commitment to team strategy.
Where Battlefield used classes as a form of strategic team composition, Call of Dut y's Create-A-Class system focused more on player preference than anything else.
Class customization in Call of Duty was relatively simplistic when it was first introduced in Call of Duty 4: Modern Warfare.