Pros:

Great Model with ejected shells

Superb Animations (Up Down Animations!!!!!) 

Cons:

first shell reload glitch (only online) 

hmmm.... nah

Conclusion:

The Look up/down animations are some of the most neglected components of all custom animation mods. I am so glad to see that that you had taken the time to add them here. It really does help remove the blocky feel some gun mods have since there is no up and down movement. Everything else is great. Animations are top-notch and look nice with larger FOV settings above 54. Good job!