Ruger AR-556 MPR

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RUGER AR-556 MPR 223/5.56 NATO 18-INCH M-LOK

The all new AR-556 MPR (Multi-Purpose Rifle) features an eighteen inch nitrided alloy steel barrel with rifle-length gas system, a 15 inch M-LOK free float handguard, the two-stage Ruger Elite 452 AR-Trigger. Magpul MOE grip and MOE SL collapsible buttstock on a mil-spec buffer tube. Flattop upper is constructed from aerospace-grade 7075-T6 aluminum; includes forward assist, dustcover and brass deflector. Type III hard coat anodized finish. Ruger muzzle brake with a radial port design. Threaded at 1/2-28 tpi.

  • Two-stage trigger that offers a smooth, crisp, 4.5 pound trigger pull.
  • Rifle-length gas system.
  • Magpul® M-LOK® accessory rail.
  • Chrome-plated bolt carrier.
  • Ruger muzzle brake.
  • Cold hammer-forged 4140 chrome-moly steel barrel.


  • Caliber: 5.56x45 NATO
  • Barrel Length: 18"
  • Twist: 1:8" RH, 5 Grooves
  • Thread Pattern: 1/2"-28
  • Overall Length: 35"-38.25"
  • Length of Pull: 11.10"-14.40"
  • Height: 8"
  • Weight: 6.8 lbs.
  • Finish: Type III Hard Coat Anodized
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