Also what are the best attachments for that gun?
I would suggest an SMG, probably AK47u with a grip and silencer.
The gun has enough ammo per clip so that you can spray if you like.
Grip will reduce the amount of recoil and give you a chance at mid-range.
The silencer will not reveal your position while you shoot, so you have a little more time lining up the shots.
You can setup the perks as Lightweight, Steady Aim and Second Chance to give you a further edge.
Lightweight to help you dodge the enemy, ( faster strafing ). Steady aim for well steady aim when shooting from the hip and second chance ( pro if possible ) for revenge with a pistol.
I know this has been answered multiple times but here's my two cents....
At one point my game was getting so terrible due to horrible aim that I simply gave up and instead of wanting to rank up, aimed towards actually going out an having some fun in the game.
Enter the M60!
Wanting to make some noise and be a general nuisance since I was sucking anyway, I created a heavily armed LMG class with an M60 Extended Mag + Grip (Warlord Perk), Frag grenade + Willy Pete, C4 and a RPG as a secondary.
My perks were Flak Jacket, Warlord and Marathon.
You will not believe how many killscores I was racking up.
Here's the reason why: The M60, though lacking in accuracy and fire rate, more than makes up in the damage department. To top that, any player you hit has so much throwback from the bullet impacts that it usually gives you a chance to hit him again (this makes up for the low fire rate).
I know this sounds crazy but novice players should really try out the M60. No matter how inaccurate a gun is, the first bullet is usually on target and the high damage makes sure that it leaves a mark! (I've taken out snipers using one tap bursts of the M60).
And lastly, this may just be me but it's the most satisfying gun to shoot with in terms of force feedback and sound :)
I would suggest that you go with Dual Wield SMGs. Try to stay away from big, empty spaces and if anything moves on your screen, start shooting. As soon as you see the cross-hairs turn into an X you're hitting them, so just try to keep that X up.
With the dual wield you'll lose accuracy, but when you do get the jump on someone and connect it's a very quick death for them. That also means it's less likely that they'll have a chance to move, causing you to have to adjust your aim.