Bling

Bling is a Tier One Perk that appears in Call of Duty: Modern Warfare 2, unlocked at level 21. It allows players to equip two attachments on their primary weapon. Bling Pro is unlocked by getting 200 kills while the Bling Perk is equipped. The Pro version of the Perk allows the player to put two attachments on their secondary weapon. Contrary to popular belief, picking up a Bling weapon and getting kills with it without having Bling equipped does not count towards completing Bling Pro challenges, despite what the description of the challenge says. However, having Bling equipped as a Perk and picking a weapon up without two attachments still counts towards the Pro challenge. However. becuase it takes up the tier one perk slot, some players may forego Bling, as they may want to choose Scavenger, especially on weapons with a small magazine or low ammo count, such as any of the sniper rifles, the AA-12, or pistols.