Oh the old game we all forgot about. Its so awesome. This is what made TF2 today.

In this game you dissasembly and assembly guns. You can learn alot of the parts and names used for guns. Yea you can even test them! I have never seen a game that you dissasemble or assembly guns.

This is the best FPS shooter on steam that anyone can have, has hats and other weapons with perks. You can meet new players. Bassiacaly its cool.