Steyr ACR
«Advanced Combat Rifle»
Assault rifleAustria1989Historic
Bullpup prototype developed for the U.S. Army Advanced Combat Rifle programme, chambered for 1.5 mm flechette ammunition in a polymer case.
Assault rifle//Austria
ID — STEYR-ACR
Designation
Steyr ACR
Steyr-Mannlicher
Caliber
1.5×41 mm SCF flechette
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Data trust
- Reliability
- Unverified
- Sources
- Sources pending review
Identity
- Designation
- Steyr ACR
- Alias
- Advanced Combat Rifle
- Manufacturer
- Steyr-Mannlicher
- Country
- Austria
- Year
- 1989
- Category
- Assault rifle
- Status
- Historic
Ballistics
- Caliber
- 1.5×41 mm SCF flechette
- Muzzle velocity
- 1450 m/s
- Rate of fire
- ~600 rpm
- Effective range
- 600 m
Dimensions
- Barrel length
- 540 mm
- Overall length
- 765 mm
- Empty weight
- 3.23 kg
Mechanics
- Operating system
- Presa di gas, rising chamber
- Bolt / action
- Camera elevatrice verticale
Feed
- System
- Caricatore amovibile in polimero
- Standard capacity
- 24 rounds
Fire modes
SafeSemi-autoBurst
Historical profile
Presented in 1989 as part of the U.S. ACR programme, which sought a rifle that could exceed the M16A2's hit probability by 100%.
It uses a revolutionary rising-chamber action and high-velocity flechette ammunition, dramatically reducing recoil.
Despite its innovative engineering, the programme was cancelled in 1990 with no candidate adopted; the prototype remains one of the boldest projects of recent firearms history.
Key components
- ●Stock — Shoulder rest.
- ●Receiver — Weapon body with internal mechanisms.
- ●Grip — Primary grip.
- ●Magazine — Cartridge feed.
- ●Barrel — Guides the projectile.
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