07 Feb 13, 07:08PM
How about you make an AR model with a nade launcher attached. One copy without the nade launcher for normal AR use and one with for the nade throwing stuff. This way, when you right click, your gun dips down and comes up with a nade launcher, and you can launch nades. When you're done you just switch back to the AR, the gun dips down and comes up without a nade launcher. Obviously this would require you to mod both the AR and grenade weapons.