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Ruger AR-556 5.56 NATO M4 Flat-Top Gun

$829.00 $589.99


  • AR-556 5.56mm Barrett Brown Cerakote
  • (1) 30-Round Magazine
  • Cable Lock
  • Owner’s Manual

Ruger AR-556 5.56 NATO M4 Flat-Top Gun


Flat-Top Autoloading Rifle The Ruger AR-556 5.56 NATO M4 Flat-Top Gun semi-automatic, M4-style, direct impingement Modern Sporting Rifle offers consumers an affordable American-made Modern Sporting Rifle with the rugge reliability they have come to expect from Ruger.

Chambere in 5.56 NATO the AR-556’s carbine-length flat-top M4 design is fully configure with a Ruger Rapid Deploy folding rear sight mille F-height gas block with post front sight forward assist dust cover brass deflector telescoping six-position stock improve trigger-reach grip enlarge trigger guard and one 30-round Magpul PMag.

  • Manufacturer: Ruger
  • Model: AR-556
  • Model Number: 8503
  • Caliber: 5.56 NATO
  • Weight: 6.50 lbs.
  • Length: 32.25 – 35.50 in.
  • Length of Pull: 10.25 – 13.50 in.
  • Width: 2.50 in.
  • Height: 8.00 in. (Without Magazine)
  • Capacity: 30-Rounds
  • Buttstock: Six-Position Telescoping / Mil-Spec Buffer Tube / Barrett Brown
  • Handguards: Heat Resistant Glass-Filled Nylon / Barrett Brown
  • Grip: Ergonomic Improve Trigger Reach / Enlarged Trigger Guard Opening
  • Sights: Elevation Adjustable Front / Windage Adjustable Ruger® Rapid Deploy Folding Rear (Front Sight Tool Include)
  • Upper Receiver: Flat Top 7075-T6 Aluminum Forging / Forward Assist Dust Cover and Brass Deflector / Type III Hard Coat Anodized
  • Lower Receiver: 7075-T6 Aluminum Forging / Type III Hard Coat Anodized | Cerakote Barrett Brown Finish
  • Bolt Carrier Group: Staked Gas Key / Chrome Plated Bolt Carrier ID and Gas Key ID / Matte Black Oxide Finish
  • Bolt: 9310 Alloy Steel / Shoot Peened / PT Tested
  • Barrel:
    16.10 in. Medium Contour
    Cold Hammer-Forged 4140 Chrome-Moly Steel
    1:8 Twist Stabilizes Bullets from 35 to 77 Grain
    M4 Feed Ramp Cuts
    PT Tested
    Threaded ½ – 28 with Ruger Flash Suppressor
    Barrel Contour is .850 Under the Handguard .750 Under the Gas Block .700 Forward of the Gas Block
    Matte Black Oxide Finished
  • Gas Block:
    A-2 F-Height Pinned in Place
    Multiple Sling Attachment Points and with QD Port and Bayonet Lug
    Machined Low-Glare Serrations on Angled Face
  • Barrel Nut/Delta Ring:
    Patent Pending Design
    One Person Removal
    Accepts Standard Handguards
    Uses Standard Wrench Can be Swapped with a Mil-Spec Nut if Desired


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