Steyr AUG - Variants

Variants

A semi-automatic version of the rifle known as the AUG P is available to the civilian and law enforcement markets. It features a shorter, 407 mm (16.0 in) barrel and a modified bolt, carrier and trigger assembly that will only allow semi-automatic fire. The rifle also has a slightly different optical sight that features a reticule with a fine dot in the center of the aiming circle, allowing for more precise aiming.

The light machine gun variant can be modified to fire from an open bolt (called the AUG LMG in this configuration). To accomplish this, a modified bolt carrier, striker and trigger mechanism with sear are used.

Based on the AUG, Steyr developed the 9 mm AUG submachine gun that fires the 9x19mm Parabellum pistol cartridge. It is an automatic, blowback-operated model that fires from a closed bolt. Unlike the rifle variants, this SMG has a unique 420 mm (16.5 in) barrel with six right-hand grooves at a 250 mm (1:9.8 in) rifling twist rate, ended with a recoil compensator, a slightly different charging handle and a magazine well conversion insert enabling the use of standard 25-round box magazines from the Steyr MPi 81 and TMP submachine guns. A conversion kit used to transform any rifle variant into the submachine gun is also available. It consists of a barrel, bolt, adapter insert and magazine.

• AUG A1: Standard version introduced in 1977. Available with a choice of olive or black furniture.
• AUG A2: Similar to the AUG A1, but features a redesigned charging handle and a detachable telescopic sight which can be replaced with a MIL-STD-1913 rail.
• AUG A3: Similar to the AUG A2, but features a MIL-STD-1913 rail on top of the receiver, and an external bolt release.
• AUG A3 SF (also known as the AUG A2 Commando): Similar to the AUG A2, but features MIL-STD-1913 rails mounted on the telescopic sight and on the right side of the receiver, and includes an external bolt release. It was adopted by the Austrian Special Forces in late 2007.
• AUG A3 SA USA: Semi-automatic AUG A3 with a 407 mm (16.0 in) barrel, made available for the U.S. civilian market in April 2009.
• AUG P: Semi-automatic AUG A1 with a shorter, 407 mm (16.0 in) barrel.
• AUG P Special Receiver: Similar to the AUG P, but features a MIL-STD-1913 rail on top of the receiver.
• AUG Para (also known as the AUG SMG or AUG 9mm): Chambered in 9×19mm Parabellum and produced since 1988. Differs from A1 model in barrel, bolt, magazine and a magazine well adapter, which allows the rifle to feed from Steyr MPi 69 magazines. This version operates as a blowback firearm, without use of the rifle's gas system. For some time a kit of the above components was available to convert any AUG into a 9 mm variant.
• AUG A3 Para XS: 9mm version of the AUG A3, similar to the AUG Para. Features a 325 mm (12.8 in) barrel and Picatinny rail system.
• AUG M203: An AUG modified for use with the M203 grenade launcher.
• AUG LSW (Light Support Weapon): A family of light support versions of the AUG.
• AUG HBAR (Heavy-Barreled Automatic Rifle): A longer, heavier-barreled version for use as a light machine gun.
• AUG LMG (Light machine gun): Based on the AUG HBAR, fires from an open bolt, has 4x rather than 1.5× optic of the base AUG.
• AUG LMG–T: Same as LMG, but has rail similar to the AUG P Special Receiver.
• AUG HBAR–T: A designated marksman rifle based on the HBAR with a universal scope mount cast into the receiver and fitted with a Kahles ZF69 6×42 optical sight.
• AUG Z: Semi-automatic version, somewhat similar to the A2, intended primarily for civilian use.
• AUG SA: Semi-automatic version of the A1 variant; built for civilian use and import to the US before being banned from importation in 1989.
• USR: An AUG A2 modified to meet the former Federal Assault Weapons Ban (AWB) (or Public Safety and Recreational Firearms Use Protection Act) regulations. The primary difference is the omission of the flash hider.
• AUG NATO: Uses a right-hand-only, NATO STANAG magazine stock assembly.