Ruger AR-556 MPR 5.56mm Semi Automatic Rifle

Ruger AR-556 MPR 5.56mm Semi-Automatic 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.

• Lower receiver is fitted with Magpul MOE grip and MOE SL collapsible buttstock on the Mil-Spec buffer tube
• Handguard is free-floating for accuracy and the slim, 15" length provides enhanced ergonomics and support
• Made from aerospace-grade 7075-T6 aluminum forging, the flattop upper receiver includes a forward assist, dust cover and brass deflector and is Type III hard coat anodized for maximum durability
• Bolt is machined from 9310 alloy steel and is shot peened and pressure (proof) tested to ensure strength, structural integrity and durability
• The Ruger Elite 452 AR-Trigger is a two-stage trigger that offers a smooth, crisp, 4.5 lb trigger pull. It features a full-strength hammer spring for consistent primer ignition and a lightweight hammer that enables a 30% faster lock time over standard MSR triggers
• Rifle-length gas system provides smoother operation and reduces felt recoil
• Magpul M-LOK accessory attachment slots along the 3:00, 6:00 and 9:00 positions with additional slots on the angled faces near the muzzle
• Cold hammer-forged 4140 chrome-moly steel barrel with ultra-precise rifling provides exceptional accuracy, longevity and easy cleaning. The 1:8" twist rate stabilizes bullets from 35GR to 77GR, and the 5.56 NATO chamber allows the use of both 5.56 NATO and .223 Rem. Ammunition. M4 feed ramps provide improved operational reliability, and the matte black nitrided finish provides corrosion resistance
• Chrome-plated bolt carrier inside diameter and chrome-plated gas key inside diameter provide exceptional resistance to hot gases. The gas key is staked so that it will not loosen after extensive firing. A matte black oxide finish on the exterior of the bolt carrier provides corrosion resistance
• Ruger muzzle brake is a radial port design that significantly reduces felt recoil and muzzle movement. The 1/2"-28 threaded barrel allows for standard muzzle accessories to be installed.
• Also includes: One, 30-round Magpul PMAG
• Stock: Black Synthetic, Collapsible
• Barrel Length: 18"
• Thread Pattern: 1/2"-28
• Handguard: Free-Float M-LOK
• Twist: 1:8" RH
• Capacity: 30
• Finish: Type III Hard Coat Anodized
• Height: 8"
• Overall Length: 35" - 38.25"
• Length of Pull: 11.10" - 14.40"
• Grooves:5