AAI ACR Rifle Cartridge, Specifications, History, Design and Manufacturer

  • 2022-07-19 18:16:16

The AAI ACR was a prototype fletchet-firing assault rifle produced for the US Army's Advanced Combat Rifle Program from 1989/90. Although the AAI design proved effective, as did most weapons presented, the entire ACR program ended, with no 100% better performance than the baseline M16A2 for a successful ACR weapon.

Type

Assault rifle/Flechette rifle

Place of origin

United States

 

AAI ACR Rifle Cartridge Capacity

  • This rifle comes with cartridges 5.56×45mm sub-calibre flechette

 

AAI ACR Rifle Specifications  

Mass

3.53 kg (7.8 lb) (empty)

Length

1,016 mm (40.0 in)

Barrel length

21.3 in (540 mm)

 

AAI ACR Rifle History

Designer

AAI Corporation

Designed

AAI Corporation

Manufacturer

AAI Corporation

Produced

1989–present

No. built

-

Variants

AAI Design

 

AAI ACR Rifle Service History 

In service

1990-present

Used by

United States (experimental)

Wars

-

  

AAI ACR Rifle Design

Based on AAI's SFR/XM19 rifle developed as part of the SPIW programme, the AAI ACR was one of the more traditional entrants to the ACR program externally. A closed bolt, gas operated, full stock, magazine fed, conventionally placed rifle.

Other contemporary sources describe it as innovative, but how it differs from the traditional long or short stroke piston systems already in place at the time is unclear. Jane's Infantry Weapon is anticipated to mimic the system from the previous Serial Bullet Rifle/Serial Fletchet Rifle in which the 3 chambers were cycled in and out of alignment with the barrel to produce rapid 3 round bursts.

 

AAI ACR Rifle Design Highlight

Cartridge

5.56×45mm sub-calibre flechette

Action

Gas-operated

Rate of fire

Semi automatic 3-round burst at 1800 rounds per minute

Muzzle velocity

1,402 m/s (4,600 ft/s)

Effective firing range

2,000 ft. (610 m)

Feed system

30-round detachable box magazine

Sights

single power telescope, interchangeable, iron sight

 

AAI ACR Rifle Price

AAI ACR

$2,799. (estimate value)

AAI ACR

$3,360.09 (estimate value)

AAI ACR Rifle Price

USD $29.00. (estimate value)

AK-101 Rifle Price Unit cost

Gov. price US$150–160 per unit in 2014 (estimate value)

 

The AAI ACR Round consists of a broken fletchet packed in a conventional brass case of 5.56×45mm round. The fin-stabilized fleechette weighs 0.66 g and is approximately 1.6 mm in diameter and 41.27 mm long, with a rough surface so that the sabot and fleechet stay together during shot travel. The Sabot is a four-part spindle sabot made of liquid crystal polymer, which is held in place with a rubber O-ring on the back of the Sabot. The choice of material resolved AAI's issues with previous Flesh rifles such as those developed during the SPIW program. That is, the rear plastic failed or the dust generated is considered a health hazard, and the rear cartridge requires the use of primer actuation. The Flechette & Sabot assembly weighs in at 1.36 grams, providing a low recoil impulse. 55000 psi firing. generated chamber pressure


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