Submachine gun
Videos
A submachine gun (SMG) is a magazine-fed automatic carbine designed to fire handgun cartridges. The term "submachine gun" was coined by John T. Thompson, the inventor of the Thompson submachine gun, to describe its design concept as an automatic firearm with notably less firepower than a machine gun. As a machine gun must fire rifle cartridges to be classified as such, submachine guns are not considered machine guns.
A Mini Uzi and a Heckler & Koch MP5K, two common submachine guns
Artillery Luger P08 pistol with snail-drum magazine and removable stock.
The FIAT Mod.1915 is considered by some to be the first submachinegun.
A Standschütze Hellriegel M1915, the first submachinegun with a buttstock, seen here with stick and drum magazines
Firearm
Videos
A firearm is any type of gun that uses an explosive charge and is designed to be readily carried and used by an individual. The term is legally defined further in different countries.
The Colt Single Action Army, a revolver chambered in .45 Colt
The Glock 19, a pistol chambered in 9×19mm Parabellum
The Mosin–Nagant, a rifle chambered in 7.62×54mmR
The M4 carbine, a carbine derivative of the M16 rifle, chambered in 5.56×45mm NATO