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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.
It was designed by AR57 LLC.

View More On Wikipedia.org
Recent contents
  1. Robert96

    AR-57 pistol, takes P90mags

      1. For Sale
      2. For Trade
    • $1000
    • Keizer
    • Oregon
    AR-57 upper on a Anderson lower, Holosun 509 titanium Red Dot, kris vector iron sights, mixed match unofficial/official parts on Surifier scout with 45° offset and pressure pad. 1-50rd mag Would love to trade for a diamondback DBX57
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