Pros:

The rifle is a very good model

Cons:

Appears too small on the world model; hands clip
Cringe Worthy: It will commonly make a sped-up sound of something.

Conclusion:

The gun itself is a very nice fix. I feel that it's a good step up from the old M14. What's bugging me the most is the sounds that will be squeaked approximately two seconds after firing. I don't know if it's a problem with my computer, but that is very annoying.

Pros:

Infinite ammo. What else?

Cons:

Conflicts with some of the weapon skins.

Conclusion:

If you're playing Left 4 Dead 2 with the infinite ammo mod, there will be some conflicts with some skins. In my experience, it's only with the H&K M416 and IMI Uzi mods. It doesn't seem to compete with the other mods. If you're willing to put some time to it, a good trick is to activate the ammo mod, quit the game, and reactivate the skins. Infinite ammo still exists, and your weapon mods are the same.