The Sturmgewehr 58 (StG 58) is a selective fire (semi-automatic and fully automatic) battle rifle.
The first 20,000 were manufactured by Fabrique Nationale d’Armes de Guerre-Herstal Belgique, but later the StG58 was manufactured under licence by Steyr-Daimler-Puch (now Steyr Mannlicher), and was formerly the standard rifle of the Österreichisches Bundesheer (Austrian Federal Army).
It is essentially a user-customized version of the FAL and is still in use, mainly as a drill weapon in the Austrian forces.
It was selected in a 1958 competition, beating the Spanish CETME and American Armalite AR-10.

Most StG 58s featured a folding bipod, and differ from the FAL by using a plastic stock rather than wood in order to reduce weight in the later production rifles (although some of the early FN-built production rifles did come with wooden stocks).
The rifle can be distinguished from its Belgian and Argentine counterparts by its combination flash suppressor and grenade launcher.
The foregrip was a two-part steel pressing.

Steyr-built StG 58s had a hammer forged barrel that was considered to be the best barrel fitted to any FAL.
Some StG58s had modifications made to the fire mode selector so that the fully automatic option was removed, leaving the selector with only safe and single-shot positions.
The StG 58 was replaced by the Steyr AUG (designated StG 77) in 1977, although the StG 58 served with many units as the primary service rifle through the mid-1980s.
The Sturmgewehr 58 (StG 58) is a selective fire (semi-automatic and fully automatic) battle rifle. The first 20,000 were manufactured by Fabrique Nationale d’Armes de Guerre-Herstal Belgique, but later the StG58 was manufactured under licence by Steyr-Daimler-Puch (now Steyr Mannlicher), and was formerly the standard rifle of the Österreichisches Bundesheer (Austrian Federal Army). It is essentially a user-customized version of the FAL and is still in use, mainly as a drill weapon in the Austrian forces. It was selected in a 1958 competition, beating the Spanish CETME and American Armalite AR-10.
Most StG 58s featured a folding bipod, and differ from the FAL by using a plastic stock rather than wood in order to reduce weight in the later production rifles (although some of the early FN-built production rifles did come with wooden stocks). The rifle can be distinguished from its Belgian and Argentine counterparts by its combination flash suppressor and grenade launcher. The foregrip was a two-part steel pressing.
Steyr-built StG 58s had a hammer forged barrel that was considered to be the best barrel fitted to any FAL. Some StG58s had modifications made to the fire mode selector so that the fully automatic option was removed, leaving the selector with only safe and single-shot positions. The StG 58 was replaced by the Steyr AUG (designated StG 77) in 1977, although the StG 58 served with many units as the primary service rifle through the mid-1980s.
FN FAL