Modern Warfare: Source is a hl2 mod aimed toward cloning many game play features of Call of Duty: Modern Warfare 1 & 2. Some features include quick-grenade, quick-stab, iron sights, regenerating health, and others soon to fallow.
A Demonstration of Our Grenade Cooking.
Very nice, just get rid of the clicking sound when its thrown, and be sure to have no red trail in it.