Grip vs Rapid Fire
Many people like using the AK 74u, right? It's the most popular gun in the game. X_x
For all SMG's (minus no grip for MP5K) you can add a grip or rapid fire that increases accuracy and reduces recoil and increases rate of fire tremendously, respectively. My advice to many is to combine grip and rapid fire for those with Warlord, use rapid fire if you have Scavenger (cause you burn through ammo like there's no tomorrow) or grip for those who want easier kills at longer ranges (or less kick from your AK74u).
Added by: Glaceon Mar 15th 2011, ID#3744