Carbine
A carbine is a lighter, shorter type of rifle. The smaller size and lighter weight of carbines makes them easier to handle. They are often issued to high-mobility troops such as special-ops soldiers and paratroopers. Also they can be used by mounted or other non-infantry personnel who do not need full-sized rifles.
The U.S. M4 carbine is a classic example. Continuous-fire versions may also be described as submachine guns
Carbine Media
An M4 carbine, a common AR-15–style carbine. The M4 is the shorter, lighter carbine variant of the M16 rifle.
Carbine model 1793, used by the French Army during the French Revolutionary Wars
FN FAL rifle – (left) full size, (right) carbine/paratrooper variant with a folding stock and shortened barrel
Two M4 carbines stowed ahead of the flight instrument panel of a US Army OH-58D reconnaissance helicopter, over Iraq in 2004
Marlin 1894C .357 Magnum carbine
Ruger PC Carbine in 9×19mm Parabellum