Firstly, A revolver (also call a six shooter or a wheel gun is a repeating handgun that has a revolving cylinder containing multiple chambers (each holding a single cartridge) and at least one barrel for firing. Buy Automatic revolvers Online
Secondly, Before firing a round, the hammer is cock and the cylinder rotates partially. Indexing one of the cylinder chambers into alignment with the barrel. Which allows the bullet to be fire through the bore.
Thirdly, The hammer cocking can be achieve by either the user manually. Pulling the hammer back (as in single-action). Via internal linkage relaying a rearward movement of the trigger (as in double-action). Or both (as in double/single-action). By sequentially rotating through each chamber. The revolver allows the user to fire multiple times. Until having to reload the gun. Unlike older single-shot firearms that had to be reloaded after each shot.