Handguns

revolvers

* Easier to cycle to adjoining round in the unlikely case of a failure/blockage: all that is needed is a paddle of the trigger, while in semi autos http://www.gunslot.com/guns/handguns one must rack the slide, which takes the automatic pistol out of the shooting position. See Tap Rack Bang.
* More reliable.
* Spent cartridges are kept in the cylinder whereas a firearm ejects them.(This is useful if different wants to collect them, as collecting ejected shells is not only tedious but can be dangerous as fresh shells are precise hot)