AR-57

The AR-57, also known as the AR Five Seven, is available as either an upper receiver for the AR-15/M16 rifle or a complete rifle, firing 5.7×28mm rounds from standard FN P90 magazines.[3][4]

AR-57
The AR-57
TypeSemi-automatic rifle (civilian variant)
personal defense weapon
automatic rifle
Place of originUnited States
Service history
In service2019–present
WarsVenezuelan crisis
Production history
Designed2008–2016
ManufacturerAR57 LLC
Unit costUS$1,099
Produced2008–present
Specifications
Mass7.45 lb (3.4 kg) (AR-57 PDW)[1]
Length30 in (762.0 mm) (AR-57 PDW)[1]
Barrel length16 in (406.4 mm) (AR-57 PDW)[1]
CartridgeFN 5.7×28mm[2]
Caliber.22
Feed systemFN P90 detachable box magazines[2]
SightsM1913 Picatinny rail[2]

It was designed by AR57 LLC.[5]

History

Venezuelan soldiers who defected to Juan Guaidó were photographed using an AR-57 during the crisis in Venezuela in 2019.[6]

Design

The AR-57 PDW upper is a new design on AR-15/M16 rifles, blending the AR-15/M16 lower with a lightweight, monolithic upper receiver system chambered in 5.7×28mm. This model is also sold as a complete rifle, supplied with two 50-round P90 magazines.[1] The magazines mount horizontally on top of the front handguard, with brass ejecting through the magazine well. AR-15/M16-based STANAG magazines can be used to catch spent casings by taking out the feed lips, spring and follower.[7] Sheet metal brass can also be used on the AR-15/M16 lower.[7]

Various scopes and other accessories can be mounted on the picatinny rail.[8]

Unlike the standard AR-15 configuration which uses a gas-tube system, the AR-57 cycles via straight blowback.[9] A fully automatic version exists and was marketed as a competitor to the P90 and other personal defense weapons.[10]

Suppressed versions are also available.[10]

User

References
  1. "AR Five-seven Rifles: AR57A1 PDW Carbine". AR57 LLC. Archived from the original on 2010-05-23. Retrieved 2010-04-05.
  2. "AR Five-seven Image Gallery". AR57 LLC. Archived from the original on 2011-07-07. Retrieved 2010-04-05.
  3. https://americanshootingjournal.com/fully-functional-five-seven/
  4. https://www.breachbangclear.com/ar-57-ar-variant/
  5. "Rhineland arms". Archived from the original on 2010-01-13. Retrieved 2010-01-13.
  6. "POTD: A Venezuelan AR57 Appears -". 9 May 2019.
  7. https://smallarmsreview.com/the-second-generation-ar57-drop-in-5-7-upper-for-your-ar/
  8. https://www.swatmag.com/article/p90-goes-ar-15/
  9. "Patent US20110168009". Retrieved 2012-12-05.
  10. "Sneak peek of suppressed full auto AR57 -". 30 November 2008.
  11. https://www.thedrive.com/the-war-zone/27746/venezuelas-capital-is-in-the-grips-of-violent-upheaval-and-heres-what-you-should-know


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