Pros:

-Texture
-No Flashlight
-Sound

Cons:

-Laser
-Large box with a glowing  outline at the end of the laser which startled me the first time I saw it.
-I occasionally hear a very creepy high pitched "giggling" noise after I shoot, which also startled me.

Conclusion:

One of my favorite magnum mods for L4D2, but the laser really gets in the way a lot of the time. Overall, pretty good mod.