Mw2 class help best 8 classes plz list evrything including flash/stun grenades?

ive played mw2 sooooo much like 35 days and ive nevr gotten a nuke im 6th prestige lvl 48 i have a mod lol and i have like 3 sniper classes bcuz i have a norm 1 a akimbo magnums 1 and a moddels 1 lol and i have a knife class a noob tube class a throwing knife class and 1 acr, and 1 scar class also like how can i get nukes !!!!!! pissing meee offffffff