Ruger AR-556 5.56mm NATO, 10.5 in Barrel, Free-Float M-LOK, SB Tactical Brace, Linear Compensator (2016)
This customized Ruger AR-556 brings a compact 10.5 inch 5.56mm NATO configuration with practical upgrades and clean execution. Notable features include a free-float M-LOK aluminum handguard, a fluted linear compensator/flash-can, and an extended bolt catch/release paddle. The receiver shows Ruger Mayodan, NC markings with the Ruger phoenix logo, and the upper is a flat-top design with forward assist, case deflector, and ejection port cover. It includes one 30-round STANAG-pattern magazine and retains an excellent bore.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Light scuffing from minimal handling is present. There is pitting on the barrel finish.
What’s Included
- Sturm Ruger AR-556 semi-automatic firearm in 5.56mm NATO (10.5 in barrel)
- 1 polymer STANAG-pattern 30-round detachable magazine (brand not marked)
- Fluted linear compensator/flash-can (installed)
- SB Tactical adjustable pistol stabilizing brace (installed)
- Magpul pistol grip (installed)
- Extended/oversize bolt catch/release paddle (installed)
This AR-15 platform AR-556 uses a direct impingement system and a carbine-length receiver extension paired with an SB Tactical adjustable pistol stabilizing brace. The upper receiver is a flat-top Picatinny type and includes a forward assist, case deflector, and ejection port cover. No fixed sights are installed.
The 10.5 inch threaded barrel is fitted with a fluted linear compensator/flash-can featuring radial front ports. The free-float M-LOK aluminum handguard keeps the barrel unobstructed while providing modern accessory mounting slots.
Controls are set up for efficient operation, highlighted by the installed extended/oversize bolt catch/release paddle. A Magpul pistol grip is fitted, and the rifle uses a STANAG-pattern detachable magazine interface with a 30+1 capacity.
Receiver markings read "RUGER MAYODAN, NC USA" with the Ruger phoenix logo, and the right side is roll-marked "AR-556." The finish presents in black with a matte black anodized receiver. Year of manufacture is 2016.




