I. General Information
- Personal light semi-automatic rifle
- Ammunition: cartridge caliber 5.56x45mm NATO (.223 Remington)
- Interchangable barrel
- Integral optical sight and fixed open sights
- Synthetic 30-round magazine
II. Technical Data
||5.56x45mm NATO (.223 Remington)
||508mm (20 inches)
||Right-hand twist of one turn in 9 inches
|Chamber and Barrel
||790mm (31 inches)
||275mm (11 inches)
|Weight of Weapon
|3.6kg (7.9 pounds)
|Weight of Empty
|0.13kg (0.3 pounds)
- Cleaning kit
- Carrying sling
- Muzzle cap
- Sight adjustment tool
- Left-handed bolt
V. How to Use the Rifle
Always keep the rifle pointed in a safe direction, or at least in the
direction in which it is intended to shoot. Also, make sure that the
ejection port cover is mounted on the side of the stock that the shooter's
cheek rests on and that the correct (right or left-handed) bolt is installed.
Before shooting, check the position of the gas plug. For normal shooting,
the gas-plug plunger should be aligned with the small circle stamped on the
gas cylinder (the serrated "ears" of the plug will then be positioned
approximately horizontally). With some ammunition - or a very dirty rifle -
gas pressure may be insufficient for reliable functioning. In such cases, the
gas plug plunger may be aligned with the large circle to increase gas flow.
Locking and releasing:
To place the safety "ON" (white dot visible), push the square safety button
through the stock from left to right. A white indicator dot on the button
will be fully exposed when the safety is "ON". To take the safety "OFF"
(red dot visible), push the button in the opposite direction to expose a red
Inserting the magazine
Take the magazine by its lower half - the little finger lies beneath the
magazine bottom - and slide it into the magazine well until it audibly
After pushing the safety "ON" and inserting a loaded magazine:
- Hold the rifle by its grip with the right hand, and grasp the cocking
slide knob with the left hand.
- Fully retract the cocking slide knob, and lock it upwards.
- With the left hand, apply just enough pressure to the top of the cocking
slide knob to push it back downward.
- The cocking slide knob, as well as the bolt, should automatically cycle
forward, rendering the rifle loaded with the safety "ON".
WARNING: Visually inspect the
ejection port to ensure that the bolt is fully closed. If it is not, retract
the cocking slide knob approximately 1" and press the forward assist button on
the cocking slide knob while pushing it forward again
The rifle should be rendered "safe", unloaded, and uncocked.
- Push the safety "ON" (white dot visible).
- Press the magazine release button, and remove the magazine.
- Retract the cocking slide knob, and secure it in the upward position.
The chambered cartridge will eject or fall through the magazine well.
- Press the cocking slide knob downwards, and allow it to cycle forward.
- After ensuring that the chamber is empty, push the safety to the "OFF"
position (red dot visible), pull the trigger to decock the rifle, and
return the safety to the "ON" position.
Adjusting the Optical Sight
The optical tube is mounted into the receiver's carrying handle with three
hexagonal nuts which should remain tight and undisturbed.
- Elevation is adjusted by using the sight key to turn the inner disc of
the hex nut on the bottom of the optical tube. Turning the elevation
adjustment disc in the direction labeled "H" (higher) raises the bullet's
point of impact.
- Windage is adjusted by using the sight key to turn the inner disc of the
hex nut on the right-hand side of the optical tube. Turning the windage
adjustment disc in the direction labeled "R" moves the bullet's point of
impact to the right.
VI. Dismantling and Assembling
Without the need for special tools, the Steyr AUG can easily be assembled for
use or disassembled for cleaning. However, ensure that the rifle is unloaded
before doing either.
At this point, the AUG has been stripped into its six primary groups.
- Magazine removal - grasp the magazine with either hand, and press the
magazine catch to release it from the stock
- Barrel removal
- Holding the rifle in the right hand by its pistol grip, rest the butt
plate of the rifle against the hip.
- Retract the cocking slide knob, and secure it in the rearward position.
- Grasp the barrel grip with the left hand, and use the left thumb to
press the barrel locking latch down.
- Rotate the barrel clockwise to disengage it from the receiver assembly,
and then pull it outwards to remove it
- Removing the receiver and bolt
- Release the cocking slide knob and allow it to cycle fully forward.
- The rifle will be cocked, but do not pull the trigger or else the
hammer will swing upwards preventing the later removal of the hammer
- Resting the butt of the rifle against your hip, apply rearward
pressure to the receiver in order to relieve tension on the housing latch.
- Press the housing latch completely to the right, and remove the
receiver along with the bolt assembly.
- Slide the bolt assembly out of the receiver.
- Removing the butt plate
- Press inward on the dimple in the center of the buttplate to relieve
tension on the rear sling swivel.
- While doing so, push the rear sling swivel to the right completely
against the side of the stock.
- The butt plate can then be removed simply by lifting off of the stock.
- Removing the hammer group
- Press in on the tab at the rear of the hammer group which was formerly
underneath the dimple in the center of the butt plate, and pull the sling
swivel out of the stock.
- Grasp the tab at the rear of the hammer group, and pull the hammer
group out of the stock.
Assemble the rifle in the reverse order of dismantling it.
At this point, the AUG is completely assembled.
- Inserting the hammer mechanism
- With the hammer cocked, slide the hammer group back into the stock.
- Press in the hammer group tab until the holes in the tab are aligned
with the holes in the stock, allowing for insertion of the rear sling swivel.
- Push the sling swivel all the way into the stock, but do not force it
in. It will assemble easily when it is properly aligned.
- Reassembling the bolt
- Insert the bolt (with adaptor sleeve, bolt spring, and bolt spring
sleeve correctly attached) into the bolt carrier. Ensure that the control
stud is free to move.
- Press the bolt down into the bolt carrier until the control stud is
visible in the cam slot.
- While holding the bolt in this position, replace the firing pin by
pushing it in until it engages and rotates 90 degrees. The firing pin
raises the control stud and locks the bolt into place.
- Replacing the butt plate
- When replacing the butt plate, first insert its lower lip in the
bottom end of the stock.
- Ensure that the sling swivel is pushed in completely so that its
machined cuts will accomodate both of the butt plate's retaining catches.
- Seat the butt plate tightly against the rear of the stock.
- While pushing in on the dimple in the center of the butt plate, pull
the sling swivel out about 1/4" until it locks in place.
- Inserting the receiver
- Slide the bolt group into the receiver by inserting the guide rods
into their respective holes in the back of the receiver.
- Push the bolt group forward until the lugs on the bolt face touch the
lugs in the receiver.
- Ensure that the stock's housing latch is open and protruding from
the right side of the stock so that the bolt carrier and receiver can
- While holding the receiver face down to prevent the bolt group from
falling out, slide the stock over both assemblies until the rear of the
receiver fits tightly against the stock.
- Engage the housing latch by pressing back in to the left so that it
locks into position.
- Barrel insertion
- While holding the barrel by its grip, insert it into the receiver bore
and guide it down until the receiver face comes into contact with the
- With the barrel grip canted slightly to the left and the barrel sleeve
pressed against the receiver, rotate the barrel counter-clockwise until
the spring-loaded retaining pin automatically locks the barrel in place.
VII. Table of Stoppages
Incorrect feeding and loading
|Magazine is inserted incorrectly
||Remove the magazine, and insert
it again until the magazine catch
||Inspect the magazine, and replace
it if necessary
||Clean the magazine
|Insufficient Gas Pressure
||Align the gas plug with the large
circle to increase gas flow ; THIS
IS NOT RECOMMENDED UNDER
NORMAL FIRING CONDITIONS
||Clean the chamber
|Defective or Dirty Cartridge
||Discard the cartridge, and clean
Bolt Does Not Lock Back
|Dirty Chamber or Dirty bolt
||Clean both the chamber and the
||Eject and discard the cartridge
||Clean and oil the extractor
|Defective Cartridge (primer is
struck but fails to ignite)
||Maintain firing position for 30
seconds and then unload
|Defective or Broken Firing Pin
||Maintain firing position for 30
seconds, clear and unload the
weapon, and replace the firing pin
||Clean and oil the bolt
|Defective Hammer Mechanism
||Replace the hammer mechanism
Incorrect Extracting or Ejecting
||Clean and oil the extractor
||Replace the Extractor
|Weak Extractor Spring
||Replace the extractor spring
||Replace the Ejector
VIII. Cleaning and Maintenance
- After each usage, clean the weapon with its supplied cleaning kit or with
a commercial kit that is appropriate for .223 caliber firearms. Clean -
but do not oil - the gas system, and make sure that the barrel is also
free of oil before firing.
- Clean the lenses of the optical system with a dry, lint-free cloth, or
wash them with clean water if necessary.