Ruger AR-556 Standard (Model 8500) 5.56 NATO Semi-Auto Rifle, 16.10 in Cold Hammer-Forged Barrel, 1:8 Twist, Threaded 1/2x28
This Ruger AR-556 Standard is a 2021 Mayodan, North Carolina–made AR-15 platform rifle in excellent condition, built around a 16.10 in cold hammer-forged 4140 medium-contour barrel with 1/2x28 threads and a birdcage flash suppressor. It features forged 7075-T6 aluminum receivers with a Type III hard-coat anodized finish, an A2 F-height front sight paired with Ruger’s folding rear sight, and a flat-top upper with a full-length Picatinny rail.
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: This firearm is in great shape. Minor, superficial scratches and blemishes are present. The bore is clean and shiny.
What’s Included
- Ruger factory cardboard box with model/SKU label (08500)
- One 30-round Magpul PMAG Gen M2 MOE polymer magazine
The barrel assembly is a highlight: a 16.10 in cold hammer-forged 4140 chrome-moly steel tube with a medium contour, 1:8 RH twist, and 1/2x28 muzzle threads capped by a birdcage flash suppressor. The carbine-length gas system delivers the classic AR-556 handling and timing.
Receivers are forged 7075-T6 aluminum with a durable Type III hard-coat anodized black finish. The flat-top upper includes a full-length Picatinny rail, forward assist, dust cover, and brass deflector. The rifle uses a semi-automatic, direct-impingement operating system with a manual safety selector.
Sighting equipment consists of a pinned A2 front sight base at F-height that is elevation-adjustable, paired with a Ruger Rapid Deploy folding rear sight that is windage-adjustable. Furniture includes carbine-length, two-piece ribbed polymer handguards made from glass-filled nylon, a 6-position telescoping M4-style stock, and a black polymer pistol grip.
The bolt carrier group is built for durability, with a 9310 bolt and 8620 carrier, chrome-plated carrier and gas key bores, and a properly staked gas key. Overall length ranges from 32.25 to 35.50 in, with a listed weight of 6.5 lb and an approximate length of pull of 10.5 to 13.5 in. The rifle is STANAG-pattern magazine compatible and has a 30+1 capacity in 5.56 NATO.