The wooden part of the model is squashed together in an unrealistic and unnatural looking way.
Then why don't you fix it then if you know how it's supposed to look.
NOOB TUBE
The reload shell in/shell out animation works much better when slowed down to take 0.3 seconds instead of 0.1 as it then fits the speed at which the ejected debris comes off at. No change is needed to the model, just change the state timings.
I love this, but it's reloading speed could be a bit slower. It really packs a punch!
Thumper?MW2?
Wait, shouldn't the grenade NOT explode when you're firing too close?