The Heckler & Koch SL8 is a semi-automatic rifle manufactured by Heckler & Koch. It is a civilian version of the Heckler & Koch G36.
HK SL8-5
A semi-automatic rifle is an autoloading rifle that fires a single cartridge with each pull of the trigger and uses part of the fired cartridge's energy to eject the case and load another cartridge into the chamber. In contrast, a bolt-action rifle requires the user to cycle the bolt manually before they can fire a second time, and a fully automatic rifle fires continuously until the trigger is released.
SKS Type 56 - 7.62×39mm
Prague Castle Guard carrying the Czechoslovak vz. 52 rifle
The Fusil Automatique Modele 1917 was an early French semi-automatic rifle issued in limited number to the French Armed Forces during World War I.
The M1 Garand, designed by John Garand in 1936 and initially produced for the United States military.