It really just depends on how you want to play:
If you want to rush, you can use silenced SMG's and shotguns or pistols.
If you want to be a loud, explosive freak, using LMGs and Assault rifles with Rocket launchers like RPG's is good.
If you are a stealthy sniper, use the WA2000 or the M21 EBR or B.50 Cal.
If youre a talented sniper, using the intervention FMJ or extended mags.
The strongest Assault rifle:
AK-47 with fmj.
SMG:
UMP45 with silencer
LMG:
RPD with grip
Sniper:
Barret 50.cal with fmj
RL:
Rpg
The best weapon for a low rank in my opinion is the M4A1 thanks for your time =] i disagree, it has to be the SCAR-H, it is powerful but the clip is small.
ak-47
you can get a cod6 book at game
For single player, COD6 is longer but is the same in fun as COD4. However, multilayer in COD6 kicks COD4's butt. So if you are asking which should I buy? Get COD6
UMP.45 is defiantly the best but the MP5K works well
the no.1 thing i hate about cod6 is the grenade launchers because 150 kills with the weapon on cod5 is good but 10 with danger close is bad
no
Based on popularity of usage, the current victor is COD6: Modern Warfare 2
BOOM!
No
no its a 18+
The Whipper is the best weapon for Wyplash.