Ok so i'll go from the start..

Ready anim seems fine, no problems except to suggest having it seem as though it is being drawn out rather than being picked up.

Grenade throwing anim needs to be slowed down a bit, though I like the technique.

Idle and moving anims are fine, no problems there.

Firing anim needs to have more recoil, to me it looks as though on the 3 shot burst, he holds it completely still.

Reload anim needs a fair bit of work. For starters, take a look at the original anims, where the bolt is .. argh too early can't remember the word for it >.<.. but it's moved moved back, the next clip is loaded, then the bolt is moved back into position. That part of the anim is def. required.

To finish.. with animations you can make it fancy, but for every version you need to have the basics.