Ruger AR-556 16″ AR-15 Rifle .223/5.56 NATO 30 Round – M-LOK Handguard

SKU: RUG8529

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This item is regulated, therefore your entire order will be shipped to an FFL dealer of your choosing. After you place your order, we will contact you to finalize these details.

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Fantastic Semi-Automatic Rifle Option For Both Old & First Time AR Owners

The Ruger AR-556 16.1″ Rifle is a semi-automatic rifle built from forged aerospace-grade 7075-T6 aluminum that features an 11″ aluminum handguard that is free-floated for increased accuracy.

The handguard utilizes M-LOK attachment slots along the 3:00, 6:00, and 9:00 positions and also has additional attachment points on the angled slots near the muzzle so you can set up your handguard to your liking.

Hard Coat Anodized, Flattop Upper Receiver

The Ruger AR-556 16.1″ Rifle also features a hard coat anodized, flattop upper receiver that includes a forward assist, dust cover, and brass deflector. It also has a Picatinny rail for simple attachment of backup iron sights and optics.

The AR-556 also utilizes a heavy contour, cold hammer-forged barrel, and ergonomic pistol grip. It is a fantastic addition to anyone’s collection or a great first-time AR for anyone interested in buying one.


  • 11″ aluminum handguard is free-floated for accuracy and features Magpul® M-LOK® accessory attachment slots along the 3:00, 6:00, and 9:00 positions with additional slots on the angled faces near the muzzle.
  • The flat-top upper receiver features a Picatinny rail for easy attachment of magnified optic, red dot, or open sights.
  • Made from 7075-T6 hard-coat anodized aluminum forgings, shot-peened and proof-tested 9310 steel bolt, and 8620 steel bolt carrier. The inside diameter of the carrier and gas key are chrome plated and the key is staked for longevity.
  • Single-stage trigger provides durable and reliable fire control. The enlarged trigger guard is designed to allow gloved shooting in cold weather.
  • Six-position, telescoping, M4-style buttstock, and Mil-Spec buffer tube allow the rifle to be properly sized for different shooters or varying levels of outerwear.
  • Equipped with a heavy contour, cold hammer-forged alloy barrel with 1:8″ twist rifling that provides exceptional accuracy with bullets from 35 to 77 grains. M4 feed ramps and 5.56 NATO chamber allow the use of both 5.56 NATO and .223 Rem. ammunition. The barrel and 1/2″-28 Ruger® flash suppressor have a matte black oxide finish to reduce glare and provide corrosion resistance.
  • Ergonomic pistol grip features an extended trigger reach for more precise trigger control.
  • Made from aerospace-grade 7075-T6 aluminum forging, the flat top upper receiver features a forward assist, dust cover, and brass deflector.
  • Also includes one, 30-round Magpul® PMAG® magazine.


  • Metal Finish: Black Hardcoat Anodized
  • Action: Semi-Auto
  • Caliber: 223 Rem,5.56 NATO
  • Barrel Length: 16.10″
  • Capacity: 30+1
  • Trigger: Single-Stage
  • Safety: Manual
  • Oal: 32.25″-35.50″
  • Weight: 6.7 lbs
  • Stock Description: 6 Position
  • Receiver Material: 7075 T6 Aluminum
  • Sights: None, Optic Ready
  • Barrel Description: Heavy Cold Hammer Forged
  • Twist: 1:8″
  • Barrel Length Range: 16″ to 16.99″
  • Weight Range: 6 lbs to 6.99 lbs
  • Hand: Right
  • Stock Finish Group: Black
  • Metal Finish Group: Blued/Black


Caliber5.56 NATO/.223 Remington
Barrel Length16.1 inches
Barrel Twist Rate1:8 inches
Muzzle Threads1/2-28
Frame MaterialAluminum
Receiver Material7075-T6 Aluminum
Muzzle DeviceFlash Hider
Optics ReadyYes
Firearm TypeRifle
Weight96 ounces

Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Ruger Warranty

Choose what works best for you. Contact us by phone, mail, or submit your question via our online web form. For repairs, please contact us to receive RMA information prior to shipping your firearm.

Contact Details:

  • Telephone: 336-949-5200
  • Fax: 336-949-5300

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

Customer Reviews

Based on 1 review
Jeff Anderson
Epic gun at an epic price!

First time ordering at AT3. Customer service is great and so are the prices!!

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