User blog comment:Crazy sam10/Black Ops 2 multiplayer changes leaked/@comment-1283509-20120611161852

I think attachements will cost points, but will be unlimited (not counting uncompatible attachements, like 2 sights), so we can get scenarios like :

- Someone building up a Special Ops Sniper, with hyper-customized weapons, trading out grenades and tacticals for that, plus maybe perk slots - Someone trading out a pistol and some miscs for a second weapon - Someone trading out his main weapon for some more perks

Maybe even in their categories, some weapons will cost more than others. A Assault Rifle may cost more than a Shotgun, a Grenade Launcher attachement more than a Silencer, a Launcher more than a Pistol, ect...