The AR-556: Ruger's Dependable MSR

by
posted on November 6, 2021
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
Ar 556

On Sept. 29, 2014, Ruger introduced its AR-556. A press release at the launch explained the rifle is a “…semi-automatic, M4-style, direct impingement Modern Sporting Rifle. With all major components machined at Ruger’s Mayodan, N.C., facility, the AR-556 offers consumers an affordable, American-made Modern Sporting Rifle with the rugged reliability they have come to expect from Ruger.”

That year, one in which it was only available for three months, is the only one since that the AR-556 has not been in Gunbroker.com’s annual top-10 list of semi-automatic rifles—ranked by sales through the website. The continuing popularity speaks volumes about the quality, reliability and performance of the firearm.

Today there are four versions of the 5.56 mm NATO chambered carbines available direct from the factory, as well as a lower receiver only. All are black and the complete guns come with either basic handguards and buttstocks—most of them six-position adjustable—or Magpul MOE furniture. There’s even a pair of state-compliant versions, and MSRPs run from $959 to $1,099. The lower receiver comes in at $399.

Ruger also makes five different distributor-exclusive models, each wearing furniture in different colors. Turquoise, white, flat dark earth and OD green are available with the standard handguard and stock. Another version, in flat dark earth, comes with the Magpul furniture. MSRPs are determined by the distributor and not available on Ruger’s website.

The receivers are forged from 7075-T6 hard-coat anodized aluminum and the 9310 steel bolt is shot-peened and proof tested. The interior of the gas key and carrier are chrome plated.

All complete rifles ship with a 30-round magazine, with the exception of state compliant models, which ship with a 10-round version. The guns feature Ruger’s Rapid Deploy folding rear sight that is windage adjustable. Up front is an A2-style post.

Barrels measure 16.1", the gas block is located at the carbine-length position and rifling rate is 1:8". Barrels are threaded to accept muzzle devices, with the exception of one of the two state compliant models.

Latest

Taurus TX22 Brace 01
Taurus TX22 Brace 01

Stable Fun: The Taurus Brace-Ready TX22

Taurus USA first adopted the ideal of a brace-ready format for a traditional handgun in its GX4 Strike Bravo, and now, the company is extending that concept to its TX22 rimfire handgun.

I Have This Old Gun: The Whitney Navy Revolver

One of the lesser-known revolvers from the Civil War era, the Whitney Navy revolver had several notable features and even inspired a copycat in the Confederacy.

Standing Guard | A Midterm Case for Freedom

Being right isn’t inevitably a winning argument. If it were, the gun-control left would never win again, as all the data shows that arresting and prosecuting criminals, not going after law-abiding citizens’ guns, is what makes violent crime drop.

Resisting the Temptation of "Good Enough" for Firearm Performance

No matter what firearm you're using for whatever purpose, even if it's simply a trip to the range, always resist the temptation to accept “good enough” if there is the possibility of better performance.

Armed Citizens Stop a Lot More Criminals Than Most in the Media Will Admit

Since January 2025, the Crime Prevention Research Center has documented 16 defensive gun uses in which police say armed citizens stopped mass public killings.

Federal & Mossberg Collaborate on Autonomous Airborne Drone Defense

Federal and Mossberg are working with Palladyne AI in the creation of SwarmShot, a kinetic defense system that employs swarms of armed drones to shield troops from unmanned aircraft system threats.

Interests



Get the best of American Rifleman delivered to your inbox.