Insurgency is here! Modern Infantry Combat on Valve's Source Engine. Insurgency (INS) is a total conversion of Half-Life 2 focused on tactical gameplay.
Solid tactical FPS. On of my most favourite games of all time.
It's like Call of Duty 4/Medal of Honor 2010 made in Red Orchestra style.
Weapon handling is realistic and satisfying. Hip-fire "accuracy" is based on where you point the barrel - there is no increased spread when hip firing, but the weapon barrel isn't connected to the center of your view, it's called free aim - best seen when you use laser sights. And of course you can and should aim down the sights make accurate shots.
Overall, great game for casuals as well as for hardcore ArmA-like people - you get to see how real firefights look like and why 2 people are needed to safely throw one grenade into a doorway (because if the throwing guy isn't being covered, he can get shot when he has no firearm in the hands).