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Small Arms and Support Weapons

Steyr AUG (Armee Universal Gewehr - Universal Army Gun)

General Information

  • Personal light semi / fully automatic assault rifle
  • Ammunition: cartridge caliber 5.56x45mm NATO (.223 Remington)
  • Interchangable barrel
  • Integral optical sight (1.5 magnification)and fixed open sights
  • Synthetic 30-round magazine
Technical Data
  • Caliber 5.56x45mm NATO (.223 Remington)
  • Barrel length 508mm (20 inches)
  • Barrel twist Right-hand twist of one turn in 9 inches
  • Chamber and Barrel Bore Chrome plated
  • Overall Length 790mm (31 inches)
  • Height 275mm (11 inches)
  • Weight of WeaponWithout Magazine 3.6kg (7.9 pounds)
  • Weight of EmptyMagazine 0.13kg (0.3 pounds)
  • Issued to all infantry soldiers, it has served the Irish Army since around 1990. It replaced the FN which was used by the Reserves until 2002.
  • This is the weapon that each soldier initially receives training on to fire. They are fired on the range at up to 300 metres from the target.
  • To download a Steyr AUG User's Manual (8.9MB) Click Here
  • To download a cutaway diagram of the Steyr Click Here
  • Below is the text of an article which appeared in An Cosantoir - The Defence Forces Magazine, in December 1987 (p.16)
  • To subscribe to An Cosantoir Click Here

The New Steyr AUG A1 Weapon

The decision by the Defence Forces to adapt the STEYR AUG A1 as the standard issue infantry weapon represents a major improvement in the firepower capability and effectiveness of infantry units. The weapon has a calibre of 5.56mm which means the user can carry twice the amount of ammunition as 7.62 for the same weight. The new calibre has been adopted by most NATO countries and a similar calibre has also been adopted by the Warsaw Pact.

The new weapon of Bullpup design is 25% shorter and 16% lighter than the F.N. 7.62 which has served the Defence Forces so well for 25 years. It also offeres a see-through 30 round magazine which allows the firer to easily check its contents. Semi-automatic or full automatic fire is achieved by varying the pressure on the trigger, thus alleviating the need for a change lever. Another major advantage is the optical sight which uses a ring reticule to achieve excellent shooting results. In this system there is no defined aiming point, but instead there is a ring (like a cross-hair for instance) within which the round is guaranteed to impact within a distance of 0-300m without any adjustment. This makes it possible for the firer to engage a snap target very quickly and efficiently.

Another feature of the weapon is that it can be adapted for left and right handed firers with relative ease. The basic weapon can function as the section automatic light machine gun, and also sub-machine gun by interchanging a small number of parts including a barrel and bipod. This feature offers a high degree of parts interchangeability. Hence the name AUG (Universal Assault Rifle).

The weapon was chosen after more than two years of exhaustive technical assessment by the Army Ordnance Corps and field trails by units throughout the Defence Forces. Initially a total of nine weapons from various countries were evaluated technically in firing trials, each firing thousands of rounds while their accuracy and reliability were gauged.

Stringent safety tests were carried out to ensure maximum protection was afforded the firer in the event of a barrel obstruction or double load. In total each weapon was to fire up to 10,000 rounds and a complete picture of its performance was built up. As a result of these tests a final short-list of 4 weapons was selected to undergo troop trials with units throughout the Defence Forces. Each unit participating was issued with all the contenders on a rotation basis. After initial instruction on the weapons each unit used them for every-day tasks like patrols, cash escorts, guard duties and range practices. User comments on such diverse aspects of the weapons as snagging in clothing, ease of deployment and "feel" were compiled, cross-referenced and evaluated. From these exhaustive tests the Steyr AUG emerged as the No. 1 choice of the Defence Forces as a replacement for the venerable F.N. FAL.

In opting for the Steyr the Defence Forces have chosen a rifle that is light, accurate, easy to use and durable. It offers full standardisation of all infantry small arms, interchangeability of parts and ease maintenance. The state of the art technology used in its construction ensures that the weapon will serve well into the 21st century. Deliveries of the weapons are due to commence in 1988.

Optical Sights

For the first time in a military weapon, an optical sight has been integrated into the carrying handle and, thus, is hosed in fully protected fashion. This optical sight offers a magnification of 1.5 times. This slight magnification means a wide field of sight (45m at a range of 300m); furthermore it is possible to fire with both eyes open (as the human eyes are able to adapt themselves from 1.5 to 1.5 x). Standard: ring reticule diameter of 1.8 m projected on a distance of 300m.

 

 

 
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