Steyr Aug

Steyr AUG is a series of rifles that were first introduced in 1977 by the Austrian arms company Steyr Mannlicher. AUG stands for Armee Universal Gewehr, which means "Universal Army Rifle". Steyr AUG's own name is more often used to refer to specific versions, namely the 5.56 mm NATO bullpup assault rifle variant, with green color and an integrated telescope. This rifle actually has many variants, ranging from submachine guns, sniper rifles, to light machine guns. This rifle has been adopted into the main arms of the Austrian armed forces, Australia, New Zealand, Luxembourg, Ireland, and also was used by Malaysia. The Indonesian Special Police Unit (Gegana Brimob Polri) also uses Steyr AUG.

Design
The AUG is one of the first rifles to use the bullpup design, which makes it 25% shorter than other long-barreled rifles, without sacrificing performance and accuracy. Most AUG variants are equipped with integrated 1.5x telescopic shots. AUG is considered to have a modern ergonomic design. Other features such as the ability used by right-handed and left-handed shooters, and the use of transparent plastic materials.

The Steyr AUG barrel can be switched easily, for example to the carbine barrel or to a longer barrel. Even AUG has a modified device that can turn it into a submachine gun. Other variants, such as light machine-gun variants that have a heavier barrel, can not be modified and are set from the factory.

Variants

 -Steyr AUG A1 - The standard version introduced in 1977. Initially it was only green with a 20-inch barrel.
-Steyr AUG A2 - Similar to A2, but the viewfinder can be removed and replaced with picatinny rail.
-Steyr AUG A3 - It's been heavily modified. It has integrated picatinny rails on the top and sides. Use 6.8 mm Remington SPC bullet.
-Steyr AUG P- AUG A1 with shorter barrel.
-Steyr AUG P Special receiver- AUG P with picatinny rail.
-Steyr AUG 9 mm (AUG SMG / AUG Para) - AUG modified to use 9 x 19 mm bullets.
-Steyr AUG M203 - AUG modified to use M203 grenade launcher.
-Steyr AUG LSW (Light Support Weapon) - AUG as a light support weapon.
-Steyr AUG HBAR (Heavy-Barreled Automatic Rifle) - AUG with longer and heavy barrel, closed bolt, as a light machine gun.
-Steyr AUG LMG (Light Machine Gun) - Based on AUG HBAR, but with open bolt, and 4X viewfinder instead of 1.5x like a regular AUG.
-Stey AUG LMG-T- Same with LMG, but with picatinny rail.
-Steyr AUG HBAR-T- Sniper rifle based on HBAR.
-Steyr AUG Z- AUG A2 semi-automatic version for the civil market.
-Steyr USR- AUG A2 tailored for the US civilian market.
-F88 Austeyr - AUG modified for Australia.