Call of Duty: Modern Warfare 4 introduces a useful new Gunsmith feature that lets players customize where an equipped optic sits along the weapon's top rail, changing its appearance and potentially its feel without affecting underlying performance. The addition, which may have gone somewhat unnoticed during the game's launch weekend, serves as yet another example of how Modern Warfare 4 aims to once again raise the bar for customization in the long-running military shooter franchise.

As was the case with many Call of Duty games, weapon customization is a major part of Modern Warfare 4's meta progression system. To that end, Infinity Ward opted to expand its existing systems with even more granular controls and options, including the so-called Gunny (short for "Gunnery Sergeant") assistant capable of assembling weapon configurations around different engagement ranges. The newly introduced "Optic Rail Placement" feature is a much smaller addition by comparison, but similarly gives players another way to tailor individual weapons to their preferences.

Early adopters of Modern Warfare 4 can jump into the newest Call of Duty game with a generous double XP boost, but only if they act by October 26.

True to its self-explanatory name, Optic Rail Placement allows players to move an equipped sight forward or backward along the weapon's top Picatinny rail, also commonly referred to as its optic rail, from the Gunsmith interface. Infinity Ward describes the setting as entirely cosmetic, with the adjustment changing where the sight sits relative to the operator rather than affecting any of the weapon's underlying stats.

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