Ruger AR-556 MPR — 5.56 NATO / .223 Rem, 18" cold hammer-forged barrel, 15" M-LOK handguard, 30+1 capacity, adjustable Magpul SL stock. New in box.

• Chambering: 5.56 NATO / .223 Rem — versatile and common.

• 18" cold hammer-forged chrome-moly barrel with 1:8" twist.

• 15" full-length free-float M-LOK handguard for accessories.

• Ruger Elite 452 two-stage trigger — ~4.5 lb pull for precision.

• Threaded 1/2"-28 barrel with muzzle brake to reduce felt recoil.

• Forged 7075-T6 aluminum receivers with hard-coat anodized finish.

• Adjustable Magpul MOE SL stock and Magpul MOE grip preinstalled.

• 30+1 capacity — includes one 30-round Magpul PMAG.

• Optic-ready top rail; new in box with factory documentation.

Product description

The Ruger AR-556 MPR is a precision-built AR-15 platform engineered for shooters who demand customization, accuracy, and tactical readiness. Chambered in 5.56 NATO / .223 Rem with an 18" cold hammer-forged chrome-moly barrel and 1:8" twist, the MPR supports a wide range of bullet weights and loads. A full-length, free-float 15" M-LOK handguard provides ample mounting real estate while maintaining a slim ergonomic profile. Ruger’s forged 7075-T6 upper and lower receivers (hard-coat anodized) deliver a durable foundation, and the preinstalled Magpul MOE SL collapsible stock and grip on a mil-spec buffer tube give a comfortable, adjustable shooting platform.

At the heart of the rifle is the Ruger Elite 452 two-stage trigger (approx. 4.5-lb pull), delivering a crisp break and fast lock time for improved precision. The 18" barrel is threaded 1/2"-28 and fitted with a muzzle brake to help reduce felt recoil and improve follow-up shots. Optic-ready top rail and included Magpul PMAG (30-round) make the AR-556 MPR range-ready right out of the box — ideal for competition, serious range training, or a capable defensive platform.

Full specs

Brand: Ruger
Model: AR-556 MPR
Manufacturer Part Number (MPN): 8514
UPC: 736676085149
Caliber: 5.56 NATO / .223 Rem
Type: Modern Sporting Rifle / Tactical Rifle
Action: Semi-Automatic
Capacity: 30 + 1 (magazine included)
Barrel Length: 18 in.
Barrel Description: Chrome-moly, cold hammer-forged, threaded 1/2"-28 tpi
Twist Rate: 1:8"
Muzzle: Muzzle brake (installed)
Handguard: 15" free-float M-LOK
Receiver Material: Forged 7075-T6 aluminum
Receiver Finish: Black hard-coat anodized
Stock: Adjustable Magpul MOE SL (collapsible)
Stock Material/Finish: Synthetic / Black
Grip: Magpul MOE grip (black)
Sights: Optic ready (top rail)
Safety: Manual thumb safety
Trigger: Ruger Elite 452 two-stage (~4.5 lb pull)
Length of Pull: 11.10" – 14.40" (adjustable)
Overall Length: 35" – 38.25" (adjustable)
Weight: 6.80 lbs
Magazine Type: AR-15 style (PMAG included)
Magazine Included: 1 x 30-round Magpul PMAG
Condition: New in Box
Manufacturer: Ruger