use hardline and then use the specialist killstreak set because every first point/kill will have 2 times the same thing you get without the specialist thingy
you level up to level 80
Level 80.... 20 prestiges
Yes, you can i did it in the last level of mw3
You unlock Claymore at Level 53 in MW3! :-)
Level 69
Level 80.
You level up your secondary that you want attachments on.
In the special ops, you just level up your level to like 25, and if you spend more cash, they get riot shields :D.
The highest prestige in MW3 is 10th. 10th Prestige level 80.
yes you can but its not easy
level 60 or around there
Weapon level 5