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[[Category:Submachine guns of the United States]] |
[[Category:Submachine guns of the United States]] |
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[[Category:ArmaLite AR-10 derivatives]] |
[[Category:ArmaLite AR-10 derivatives]] |
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[[Category:AR-15 style rifles]] |
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{{Rifle-stub}} |
{{Rifle-stub}} |
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Latest revision as of 00:59, 22 November 2025
Semi-automatic rifle/pistol-caliber carbine (civilian variant)
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]
It was original designed by Rhineland Arms but produced by AR57 LLC.[5][6]
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 catchers 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[broken anchor].[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]
