[Psycho-Pass] Dominator
In the futuristic world of Psycho-Pass, law enforcement is equipped with high-tech firearm, named Dominators. It is able to scan a target's Psycho-Pass and change form according to their Crime Coefficient. It has various modes such as Non-Lethal Paralyzer, which fires non-lethal rounds that immobilizes the target, Lethal-Eliminator which fires a vaporizing shot which cleanly disposes of the target, and Destroy Decomposer that is mainly used against non-organic targets.
Should the target's Crime Coefficient be insufficient for enforcement, the gun will lock itself, preventing it from being fired, even if the enforcement officer's judgement determines otherwise.
::: spoiler Correction Um actually ... Eliminator does not cleanly dispose of the target. When shot, the target will swell and explode into a gory mess. :::
Two counterpoints.
A. It's not that big a mess. If you exploded a real human body in a similar fashion, you would be left with a much bigger pile of viscera and meat. Yeah, if you're right around the target you'll get some blood on your shoe, but no Dominator shot leaves a blood puddle that can't be fixed with a minute of mopping.
B. The Dominator fires a beam of energy. It's actually insanely impressive that it never causes collateral damage, IMO. Most laser guns in media will punch through a target and go out their back. The Dominator eliminates it's target, and nothing else. Compared to the kinda carnage a WH40k Lasgun can cause, it's actually a very "clean" weapon.