They all look pretty good, good job on that. Just something I’d do is push the weapon backwards just a little, not just upwards on the third (Fire) animation
It seems, albeit, a little stiff In my opinion:
Having the arms immeditley stop when reaching the destination like in take aim and fire seems like its hitting an invisible floor. Try adding some back easing styles/move a little more forward before pulling back into place. Also add some breathing in between to make it more realistic.
Another thing, In take aim, the twisting gun motion in the beginning is too sudden, have it twist while being pulled into position.
Reload movements seem robotic, make sure to have arcs and curves in your motion to give it more realism and flow with the gun moving along as to make it not seem so stiff.
Fireneeds to have some recoil in the body as it just looks like you’re glued. Arcs and curves in the arm movement is also important alongside gun motion.
Hopefully it doesn’t sound nitpicky but overall, good job
One think you could do to make this better is to have the arm holding the gun when you reload move around. For example when you put the clip in the gun try to move the arm down a little to make it look like he is using some force instead of just sliding the clip in. Other then that these are pretty good animations