The Ruger AR-556 MPR chambered in 5.56 NATO / .223 Rem is a precision-built AR-15 Rifle designed for shooters who demand customization, accuracy, and tactical readiness. With a longer 18-inch barrel, free-floating 15-inch M-LOK handguard, and Ruger Elite 452 two-stage trigger, this AR 15 for sale delivers top-tier performance right out of the box. Whether for competition, range training, or defense, the AR-556 MPR is ready for any mission.
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The Ruger AR-556 MPR is engineered for serious performance. Its 18-inch cold hammer-forged chrome-moly barrel is threaded and fitted with a muzzle brake to help reduce felt recoil. With a 1:8" twist, it supports a wide range of bullet weights for enhanced versatility. The full-length, free-floating 15" M-LOK handguard offers ample space for mounting AR-15 accessories, while maintaining a slim, ergonomic profile for enhanced control and comfort.
The rifle’s forged 7075-T6 aluminum upper and lower receivers are hard-coat anodized for strength and durability. A Magpul MOE SL collapsible stock and MOE grip come pre-installed on a Mil-Spec buffer tube, ensuring a stable and AR-15 Adjustable shooting platform. The heart of this rifle lies in the Ruger Elite 452 trigger, a two-stage trigger with a 4.5-pound pull and fast lock time for improved precision. Whether it's your first or fiftieth AR-15, the MPR offers superior craftsmanship, accuracy, and reliability.
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to WWW.P65WARNINGS.CA.GOV
Ruger® AR-556® MPR Features
Ruger's Custom AR Build
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 pound 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 35 to 77 grains, 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®.
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