When you Prestiege... you get an extra wepon set
i think it goes like this (cod5 way)
1st.6sets ( +1 )--extra
2nd: 7sets ( +2 )--extra
3rd: 7sets ( +2 )
4th: 8sets ( +3 )--extra
5th: 8sets ( +3 )
6th: 8sets ( +3 )
7th:9sets ( +4 )--extra
8th: 9sets ( +4 )
9th: 9sets ( +4 )
10th: 10sets ( +5 )--extra