Open with cheat engine.
All made by me.
First of many MW3 Contributions.
Code:
Class 1: 01CCF780
Class 2: 01CCF7E2
Class 3: 01CCF844
Class 4: 01CCF8A6
Class 5: 01CCF908
Class 6: 01CCF96A
Class 7: 01CCF9CC
Class 8: 01CCFA2E
Class 9: 01CCFA90
Class 10: 01CCFAF2
Class 11: 01CCFB54
Class 12: 01CCFBB6
Class 13: 01CCFC18
Class 14: 01CCFC7A
Class 15: 01CCFCDC
PRIVATE:
Class 1: 01CCFD3E
Class 2: 01CCFDA0
Class 3: 01CCFE02
Class 4: 01CCFE64
Class 5: 01CCFEC6
Set those values to 128.
once you join a game, switch to your secondary and you will get a UAV in the extra killstreak slot. repeat to get more! :)