Yes at lvl 31 A way to get it faster is by do gun challenges to get more people xp
get 2500 klls with all guns after having prestiged once at least
Well, I would recommend using the P90 or MP7 weapon, in my opinion they are great guns.
No, you need to rank up your gun level again.
Yes, you can i did it in the last level of mw3
yes
Cod MW3 has 80 levels online
Yes
most likely mw3 will have guns and attachments that you will unlock from level to level.you probably will not see and point system to buy attatchments for guns
the Fmg9 akimbo(costom) is the best secondary weapon to use
"Colored guns" or gun camos (short for camouflages) are unlocked through normal weapon use - by getting kills or destroying enemy support and equipment.
The China Lake is a secondary weapon, and the last weapon unlocked for Create-A-Class, unlocked at Level 48. It is not available in MW3
my choice of gun is fad with acog scope and grendae launcher my second weapon would be a striker shotgun good for killing jaugurenauts