I'm thinking it has to do with the weapons def file but I'm not quite sure. Admittly, We never tested the mod on stock single player missions but I have noticed the same thing after it was released. We ment it to be a multiplayer mod. The good news is
Final Conflict is a totally stand alone. It will also come with all new weapon models with all the reload animation and arm animation that the first Black Operations was lacking.
It also has many new buildings and many new terrians...but back to the original problem....yes...we are not sure what is causing that but will look into it before we release Final Conflict. Also, Final Conflict will have single missions with it so be looking for those if your a single player fan.
for more info please go to
http://umf.webhop.net
also , here is the link to the first trailer
Watch it here