Best weapon? The Ray gun lololololol. Oh wait, that's CoD5.

Well, in CoD4, other than the almighty P90, there's really no such thing as "teh best weapon". All guns have their pros and cons. Although, some weapons have their cons more than their pros which make them slightly aweful than other weapons and vice versa. But overall the weapons are quite well balanced.

This is why people prefer stock AK:

AK stock


AK RDS

No such thing as AK-47u. Roffle.

So what trouble are you having?

If you're playing pub servers, just don't give a damn what ppl call you. I lol'ed everytime someone calls me a noob in pub servers. If FF is on, I'll just tk them for fun ..... That is, if I'm playing casually

Usually, 1 stun nade gives you sufficient time to take out a person (if you're lucky, maybe a few ppl in one go ). 3x special nade perk and stun nades are not just banned from tourneys, but they are annoying as hell too. Spamming 3 stun nades onto 1 person is like wasting a good perk, I'll rather take bando and wall spam instead. Just imagine if you're a victim of 3x stun, could you visualize the annoyance of it? TIIIIIIIIIIIIIIIIIIIIII...... TIIIIIIIIIIIIIIIIIIIIII..... TIIIIIIIIIIIIIIIIIIIIIII...... damn annoying rite?

In a competitive environment, everyone will be pissed at you if you use ghey stuff, but hey, it's just casual gaming, don't give a rat's arse about what they say and continue your business.