Steyr AUG HBAR
Steyr Mannlicher · Machine Gun · In Production · 1978
Also known as: Steyr AUG-LMG, AUG H-Bar, Heavy Barrelled Automatic Rifle
Overview
The Steyr AUG HBAR is the heavy-barrelled squad automatic variant of the Steyr AUG bullpup, functioning as a light machine gun for sustained automatic fire. It pairs a longer, heavier 621mm barrel with an integrated folding bipod and accepts a special 42-round magazine. An optional open-bolt trigger group can be fitted to reduce the risk of cook-offs during prolonged firing, while retaining the AUG's polymer bullpup chassis and integrated 1.5x optical sight.
Specifications
| Weight (empty) | 4900 g (172.8 oz) |
| Overall Length | 900 mm (35.43") |
| Barrel Length | 621 mm (24.45") |
| Action Type | Gas Operated |
| Firing Mechanism | Hammer Fired |
| Trigger Type | Progressive |
| Magazine Capacity | 42 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 945 m/s (3100 fps) |
| Muzzle Energy | 1786 J (1317 ft·lbf) |
| Effective Range | 600 m (656 yd) |
| Rate of Fire | 680 rpm |
| Barrel Rifling | Right Hand |
| Rifling Twist | 228 mm (8.98") |
| Number of Grooves | 6 |
| Frame Material | Polymer |
| Barrel Material | Steel |
| Stock Material | Polymer |
| Finish | Matte |
Calibers
- 5.56x45mm NATO · primary · 5.56mm NATO — also known as 5.56 NATO, 5.56x45mm, .223 Remington (chamber compatible)
Features
- Firing modes: Semi Automatic, Full Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Cross Bolt Safety
- Features: Bullpup Layout, Heavy Barrel, Integrated Bipod, Integrated Optic, Open Bolt Trigger Option, Ambidextrous Ejection, Quick Change Barrel
Variants
- Steyr AUG HBAR-T — Designated Marksman
Base model
Service history
Operators
- Australian Army · as F88 (AUG family)
- Austrian Armed Forces
Production
Production years: 1978-present
Produced as a member of the wider Steyr AUG weapon family, which has been adopted in over 30 countries
Origin
Country of origin: Austria
Designer: Steyr Mannlicher
Notes
HBAR stands for Heavy Barrelled Automatic Rifle; the weapon is also marketed as the AUG-LMG. The 42-round magazine is backwards compatible with standard AUG rifles.
Background
The AUG family pioneered the modular bullpup concept in 1977, and the HBAR extended it into the light support role by giving squads an automatic-fire weapon that shared magazines, controls and parts with their standard service rifles.