It's far from the best pistol in the game (less effective than other choices at most ranges), but I like the Cerberus from Planetside 2 for its animation.
It's the only gun in the game that reloads its energy cell in a "break action" method like this. Most energy weapons just use larger circular batteries inserted into the side, though there are two pump action energy shotguns in the game (that at close ranges kill instantly even with body shots) where you load these little cells into a magazine individually which I think is a nice bit of "continuity".
low frame rate gif doesn't show it all that accurately and the sounds are pretty good too, so feel free to look it up on youtube.