Ruger AR-556 16-inch 5.56 NATO AR-15 Carbine, 2017 Production, 1:8 Twist, Threaded Barrel, Iron Sights
This Ruger AR-556 is a 2017-production, 16-inch AR-15 pattern carbine built in Mayodan, North Carolina. It features a flat-top Picatinny upper, A2-style fixed front sight base with a Ruger flip-up rear sight, and a 5.56 NATO chamber with a 1:8 right-hand twist. The rifle includes a threaded barrel with an A2 flash suppressor and a Ruger-branded six-position collapsible stock. It is in excellent overall condition.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minimal markings from previous handling and use.
What’s Included
- Ruger flip-up rear aperture sight (installed)
- 1x 30-round detachable box magazine (polymer body, marked 5.56x45)
The AR-556 configuration here combines a 16-inch, threaded barrel with an A2 flash suppressor and a 1:8 RH twist, supporting a wide range of 5.56 NATO loads. The barrel is marked "5.56 NATO 1-8," confirming the chambering and twist rate.
The upper receiver is a flat-top Picatinny design with a forward assist, brass deflector, and ejection-port dust cover. Sighting is handled by an A2-style fixed front sight base and a Ruger flip-up rear aperture mounted on the receiver rail.
Furniture includes carbine-length, two-piece polymer handguards retained by a knurled delta ring, an A2-style polymer pistol grip, and a Ruger-branded six-position collapsible stock with a rear sling loop. The listed length of pull is 10.5 inches.
This rifle operates via a semi-automatic, direct impingement system and uses a standard STANAG magazine interface. Capacity is 30+1. The finish is matte black, with receiver markings including "RUGER MAYODAN, NC USA," the Ruger phoenix logo, and the AR-556 model roll mark.