Ruger AR-556 MPR 5.56 NATO, 18" CHF Nitrided Barrel, 1/2x28 Threads, Ruger Elite 452 Trigger, Model 8514 (2021)
The Ruger AR-556 MPR (Model 8514) pairs an 18" cold hammer-forged, nitrided 4140 steel barrel with a rifle-length gas system for smooth operation. It features Ruger’s two-stage Elite 452 trigger, a 15" free-float M-LOK aluminum handguard with a continuous Picatinny top rail, and a Ruger radial-port muzzle brake. Forged 7075-T6 receivers with a Type III hard-coat anodized black finish and the Mayodan, NC rollmark round out this 2021-production rifle.
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: Minor, superficial scratches and blemishes are present.
What’s Included
- Ruger AR-556 MPR (Model 8514) semi-automatic rifle, 5.56mm NATO
- One 30-round Mission First Tactical (MFT) MOD 2 polymer magazine
The 18" barrel is made from 4140 chrome-moly steel, cold hammer-forged and nitrided for durability. It uses a 1:8 RH twist to stabilize a broad range of 5.56mm projectiles and is threaded 1/2x28, fitted with the factory Ruger radial-port muzzle brake.
This MPR configuration runs a rifle-length gas system with direct impingement. The bolt carrier and gas key interiors are chrome plated, and the gas key is staked. The upper includes a forward assist, ejection port cover, and brass deflector for duty-ready function.
The 15" free-float M-LOK aluminum handguard provides secure accessory mounting, and a continuous Picatinny top rail runs across the upper and handguard. Furniture includes a Magpul MOE SL six-position collapsible stock with QD sling cup and a Magpul MOE pistol grip.
Receivers are 7075-T6 forged aluminum with a Type III hard-coat anodized black finish. The receiver is rollmarked "RUGER • MAYODAN, NC USA" with the Ruger phoenix crest. Controls include a manual safety and Ruger’s two-stage Elite 452 trigger. Capacity is 30+1, and the rifle is chambered in 5.56mm NATO.