Call of Duty Multiplayer Help: Rapid fire

On Call of Duty Multiplayer you have TONS of options for your guns, a very AWESOME one happens to be Rapid fire.

Rapid fire pretty much explains itself,
 Higher rate of fire!! With this packed on a pp90m1
or other guns with a already high rate of fire,
You will tear through all who come your way.

The downside to having Rapid fire is, you will go
 Through bullets like hot cakes.. So Rapid fire in tandem with Scavenger and Extended Mag you're all set to start tearing the enemy team apart in Multiplayer!

   -Stay frosty and DOMINATE Call of Duty Multiplayer!