This invention relates to a handgun comprising a weapon frame with a grip and a break-barrel unit (11) that can be tilted forward and that is comprised of at least two barrels. A firearm as per the invention provides for a bifunctional or multifunctional hammer unit, comprising at least two hammers (19) that can be moved independently of one another when the firearm is triggered; each hammer impacts only one firing pin (28) in each case of a firing-pin unit (27) comprising at least two firing pins (28, 29) in separated positions, wherein each firing pin is assigned to one barrel of the firearm in each case. A double-barrel or multi-barrel firearm is provided in a compact design in which the hammer unit is cocked with a relatively high amount of spring force with a relatively small amount of existing space. In addition, this invention provides a firearm that has less trigger weight.