
HK also developed modern polygonal rifling, noted for its high accuracy, increased muzzle velocity and barrel life. HK has a history of innovation in firearms, such as the use of polymers in weapon designs and the use of an integral rail for flashlights on handguns.
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The G11 project involved a series of weapons under the same family: a rifle (G11), a carbine (G11 K2), an LMG (LMG11), a PDW (NBW) and. It uses caseless ammunition which is a rarity among firearms. It was developed during the Cold War to replace the G3 battle rifle in West German service this never came to fruition. All HK firearms are named by a prefix and the official designation, with suffixes used for variants. The Heckler & Koch G11 is a prototype assault rifle made by Heckler and Koch. Their more notable products include the MP5, UMP submachine guns, the G3, HK417 battle rifles, the HK33, G36, HK416 assault rifles, the MG5, HK21 General-purpose machine guns, the MP7 personal defense weapon, the USP series of handguns, and the high-precision PSG1 sniper rifle. The Heckler & Koch G11 is a prototype assault rifle made by Heckler and Koch. The company is located in Oberndorf in the state of Baden-Württemberg, and also has subsidiaries in the United Kingdom, France and the United States.

Heckler & Koch GmbH (HK) is a German defense manufacturing company that manufactures handguns, rifles, submachine guns, and grenade launchers.
