Ruger AR-556 Model 8503 5.56 NATO Semi-Auto Rifle, 16 in Cold Hammer-Forged Threaded Barrel, Barrett Brown Cerakote (2017), 1:8 Twist, 1/2x28, Carbine Gas
This Ruger AR-556 Model 8503 pairs a Barrett Brown Cerakote finish with a 16-inch cold hammer-forged alloy steel barrel threaded 1/2x28 and capped with an A2 birdcage flash suppressor. It is built on forged 7075-T6 receivers with a flat-top upper Picatinny rail, a carbine-length gas system, and an A2 front sight base. Manufactured in 2017, it features the Ruger phoenix emblem on the magwell and comes with a 30-round Magpul PMAG.
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: There are some scratches and wear to the finish.
What’s Included
- Ruger AR-556 Model 8503 rifle (Barrett Brown Cerakote)
- One 30-round Magpul PMAG polymer AR-15 magazine (5.56 AR/M4 pattern)
The 16-inch alloy steel barrel is cold hammer-forged for durability and consistent performance. It uses a 1:8 RH twist to stabilize a wide range of 5.56 NATO projectiles, and the barrel is factory-marked "5.56 NATO 1-8." Threads are cut 1/2x28 and fitted with an A2 birdcage flash suppressor.
The rifle runs a direct impingement system with carbine-length gas for reliable operation. An A2-style pinned front sight base is installed; no rear sight is included. The flat-top upper receiver provides a continuous Picatinny rail for mounting sighting solutions.
Receivers are 7075-T6 forged aluminum and include a forward assist, dust cover, and case deflector. Furniture consists of two-piece, carbine-length glass-filled nylon handguards, a six-position collapsible stock with sling loop, and a black textured pistol grip with finger grooves. Length of pull is 13.0 inches.
The Barrett Brown Cerakote finish extends to the receiver and stock, giving this configuration its distinctive look. This example is Ruger’s AR-556 Model 8503, produced in 2017, and features the Ruger phoenix emblem on the magwell. Capacity is 30+1 and one Magpul PMAG is included.