Delta Force: Black Hawk Down - Team Sabre Tips

Primary Weapon Preference
1) Go to Multiplayer mode, set up the weapon preferences
2) Once complete the set up and picked a weapon, go back to single player mode
3) On selecting Mission menu, Do Not set your primary weapon preference (leave it alone)
4) while the game is loading, it will say you picked a default weapon which is the same weapon you picked in the Multiplayer mode.