A semi-automatic, M4-Style, direct impingement Modern Sporting Rifle, the

AR-556® offers consumers an affordable, American-made rifle with the rugged reliability they have come to expect from Ruger. Extensively tested during its development, the AR-556® is constructed from top-quality components, including forged 7075-T6 aluminum upper and lower receivers and a cold hammer-forged, chrome-moly steel barrel with M4 feed ramp cuts. Chambered in 5.56 NATO with standardized M4/AR components utilized throughout, the AR-556® is easily customizable.

More Information
  • Model Specific: AR-556
  • Chamber Length: 0 in.
  • Frame Finish: Black
  • Front Sight: Adjustable Post
  • Rear Sight: Ruger Rapid Deploy Folding
  • Grips: Improved Trigger-reach
  • Stock: Black Synthetic Collapsible
  • Features: Round Lightweight HandguardForward Assist
  • Extended Length: 35.500
  • Finish: Black
  • Gas System Length: Carbine
  • Operating System: Direct Impingement
  • Frame Material: 7075 T6 Aluminum Upper & Lower
  • Trigger Guard: Enlarged
  • Barrel Configuration: Single
  • Barrel Description: Cold Hammer-forged
  • Barrel Twist: 1-8
  • Muzzle: 1/2X28, Ruger Flash Suppressor
  • Rifled Barrel: Yes
  • Minimum Pull Length: 0 in