Extra Magazine is an attachment in Medal of Honor (2010). It is unlocked at Rank 2 - Regular of each of the respective classes. Like the name suggests, it allows the user to carry an extra magazine for their primary weapon. It is recommended that the user equip it as soon as it is unlocked, as there are no downsides. It occupies the ammunition slot of the primary weapon, meaning it cannot be equipped alongside the open-tip or slug ammunition.
The magazine can be replenished from any ammo crate, meaning the user can use that magazine and restock as many times as they like. Because some weapons fire so fast, and the ammunition crates are so scarce, it's a must for players seeking to achieve higher score chains. The downside is giving up the open tip ammo.