What is the best gun on mw2?

My Top 5: (Not In Any Order)

1- Ump .45

2- .44 MAGNUM

3- ACR

4- Intervention

5- Model 1887

One Of My Classes:

Quick Scope

Primary Weapon - Intervention w/ fmj

Secondary Weapon - Desert eagle akimbo

Perk 1 - SLEIGHT OF HAND PRO

Perk 2 - STOPPING POWER

Perk 3 - NINJA PRO

Deathstreak - FINAL STAND