This is an improved version of the previous two releases for this model. The main improvement is that the base pose has been modified to make the left thumb and it's grip on the gun more natural looking. I'm keeping up the other two releases for those who might prefer either of them over this.
This is basically the OpFor/Blue Shift MP5 rig, but animated so that it resembles the original Half-Life 1 MP5. I tried to make the animations look more natural than they did in the original.