What is it modern pistols and revolvers? Why is this metall things  so popular all over the world? Beqause They are small size and light things and they can hard firer strike. Pistols and Revolvers used not only for sequrity, but for hunting.  

Half automatical pistols is used striked bullet little energy, because cartridge of a bullet preclude and be cram again. Cartridge as a rule is in “bullet case”, wich is in pistol’s handle. In “bullet case” is putting 15 cartridge or more, in one or two rows. It used to restart pistol fast.

Revolvers are named so because of rotating (revolving) a drum(reel) in which there are cartridges. Usually drum(reel) of a revolver contains 5-7 cartridges, some revolvers of calibre .22 (5,56ii) can contain up to 10 cartridges. Cartridges in a drum(reel) can be recharged by two basic ways - one behind one, as, for example, at Colt PeaceKeeper or the Revolver (and the majority old - 19 centuries - revolvers), or all at once - when a drum(reel) auuaeeeaaaony on the special lever sideways (to the left, in most cases) or when the framework breaks, opening a state cut of a drum(reel). Thus a special detail - the ex-tractor throws out no?aeyiua sleeves from a drum(reel). New cartridges are inserted on one or by means of special holders-nieaeiaaa?ia ("speedloaders").