Ruger AR-556 5.56 NATO Semi-Auto Rifle, 16" Threaded 1:8 Barrel, Free-Float M-LOK Handguard, 30+1, Excellent (2020)
This 2020 Ruger AR-556 stands out for its excellent overall condition, clean mirror-finish bore, and feature-rich AR-15 platform build. It pairs a 16" 5.56 NATO steel barrel with a 1:8 twist and a threaded muzzle fitted with an A2-style birdcage flash hider. The free-float aluminum M-LOK handguard with a continuous top rail, flat-top upper, and hard-anodized aluminum receivers complete a well-executed, USA-made configuration. Two 30-round magazines (Magpul PMAG and Amend2) are included.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Only minimal evidence of prior handling is present.
What’s Included
- Ruger AR-556 5.56 NATO semi-automatic rifle
- Two 30-round polymer AR-15 magazines (one Magpul PMAG and one Amend2)
The lower receiver is marked "RUGER MAYODAN, NC USA" with the Ruger phoenix and AR-556 model designation, confirming USA manufacture. The upper features a flat-top Picatinny rail, forward assist, ejection-port cover, and brass deflector for a robust, duty-style layout.
The 16" steel barrel uses a 1:8 twist and a 1/2"-28 threaded muzzle with an installed A2-style birdcage flash hider. This setup supports common 5.56 accessories while maintaining a compact, balanced profile.
The free-float aluminum M-LOK handguard is Ruger-marked and provides a continuous top rail that aligns with the upper for straightforward mounting of sights or other rail-mounted equipment.
Controls and furniture include a direct-impingement, rotating-bolt action with a manual safety selector, a black polymer pistol grip, and a 6-position collapsible stock with a molded Ruger logo and sling loop. Capacity is 30+1 with the included magazines.