I think they are called bind files??
 

Im pretty new to this game, but I just bought Spearhead. And I had found this mod where if you clicked on the right mouse button it would change to grenade's and then if you clicked on it again, it would change back to the weapon you were last using.

Is there anyone that knows what I'm talking about? And more importantly is there anywhere I can find this so I can put it in my spearhead game?

Thanks