Manual force must be used
Lewis gun
The Kalishnikov PKM is a gas operated, belt fed, air cooled, automatic only, machine gun.
Hand powered - 1861 Recoil operated - 1881
The advantage of a chain gun--a machinegun that uses an electric motor connected to the gun with a drive chain--is that the motor makes the gun's cycle of function more reliable when the gun gets dirty from firing or from being in a dirty environment. The motor can pull the spent cartridge casings out of the chamber more reliably than a recoil-operated or gas-operated gun can.
The Deagle is a gun in of itself. It isn't really based on anything, unless you feel that because it is a locked-breech gas operated gun that the design is copied from John Browning.
Yes- belt fed, air cooled, gas operated machinegun. Gas operated means it uses some of the expanding gasses from a fired cartridge to operate the action.
A portion of the gas generated by the burning gun powder is used to operate the action.
Which M15 (be specific), if you are talking about the M14 variant i.e M14E2/M14A1; it is the same a a regular M14.
Benelli guns carry the gas operated, semi-automatic gun style. They are Italian guns that are military type in style. They vary in size and in the amount of amo.
The M240B is an American variant of the Belgian FN-MAG machine gun. It is a belt-fed, gas operated, air cooled machine gun which fires the 7.62x51 NATO cartridge.
The M249 is an automatic light machine gun. This gun uses 5.56 mm ammunition. It is gas operated and air cooled. It has a quick change barrel. It can support a bi-pod attachment, allowing a boost in the already accurate rate of fire the gun possess.
The M3A1 Grease Gun was a .45ACP, Blowback operated, full automatic submachinegun with 30 rd clips.