The G3SG/1 is a designated marksman rifle developed from the G3 battle rifle, which was originally designed in the 1950s by the German company Heckler & Koch. This variant features a longer barrel and a more precise sighting system, making it suitable for engaging targets at greater distances. It is chambered for the 7.62×51mm NATO cartridge, providing significant stopping power. The G3SG/1 is primarily used by military and law enforcement units that require enhanced accuracy over standard infantry rifles. Its design incorporates a bipod for stability and a scope for improved target acquisition, making it effective for sharpshooters and designated marksmen in various combat scenarios.