Full Walkthrough on Hard with all Collectible Weapons and M-Com Station Locations for Bad Company 2.
If you just want to see cut up videos of JUST the Collectibles and M-Com Stations then view our Short and Sweet Guide HERE.

HEAVY METAL

M-COM STATION #9 – When you get out of the tank for the UAV, first head to the left to a tall tower up the hill. A M-Com is at the base of this tower.
COLLECTIBLE #20: M3 – After you leave the tank for the final time and head up the destroyed village the M3 is on the left on some crates in front of a turned over truck.
M-COM STATION #10 – As you are at the end of the level with the MG firing down on you from the end of the street the M-Com station is on the left in a building. Jump through a small window to get inside.