RUGER AR-556® MPR 5.56X45mm NATO

The Ruger® AR-556® Semi-Auto Rifle with Free-Float Handguard operates with direct-impingement and a rifle-length gas system.

The lower receiver comes equipped with a Magpul® MOE® pistol grip and a MOE SL™ 6-position, collapsible buttstock on a mil-spec buffer tube.  Upper and lower receivers are CNC-machined from 7075-T6 aluminum forgings and Type III hard-coat anodized for maximum durability. A 15" free-float, M-LOK® handguard features accessory attachment slots at 3:00, 6:00, and 9:00 positions, and a continuous Picatinny rail interface with the flat-top, railed, upper receiver.

The upper receiver features a forward assist, dust cover, and brass deflector, while the Ruger® Elite 452® 2-stage, AR-Trigger offers a smooth, crisp break at approximately 4.5 lbs.  The bolt carrier and gas key are chrome-plated to provide exceptional resistance to hot gases; and the gas key is securely staked to prevent loosening during extensive fire.

The cold hammer-forged steel alloy barrel boasts a 1:8" twist ratio to maximize accuracy with bullets ranging from 35 to 77 grains, and features an M4 feed ramp, and black Nitride finish for superior corrosion and moisture resistance. A factory-installed Ruger radial-port flash suppressor is attached to the 1/2"x28 threaded barrel, and is easily removed to accommodate aftermarket muzzle devices. The Ruger AR-556 Semi-Auto Rifle comes with one 30-round Magpul® PMAG® detachable box magazine. Made in USA.

Lightweight 13.50" aluminum handguard is free-floated for accuracy and features Magpul® M-LOK® accessory attachment slots along the 3:00, 6:00 and 9:00 positions. The top rail has been docked in the center for improved grip access and reduced weight while maintaining Picatinny at the front and rear.

Flat top upper receiver features a Picatinny rail for easy attachment of magnified optic, red dot or open sights.

Made from 7075-T6 hard-coat anodized aluminum forgings, shot-peened and proof-tested 9310 steel bolt, and 8620 steel bolt carrier. The inside diameter of the carrier and gas key are chrome plated and the key is staked for longevity.

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 faster lock time for improved accuracy.

Lower receiver is fitted with B5 Systems Type P23 grip and Bravo collapsible buttstock on Mil-Spec buffer tube.

Equipped with a heavy contour, cold hammer-forged alloy barrel with 1:8" twist rifling that provides exceptional accuracy with bullets from 35 to 77 grains. M4 feed ramps and 5.56 NATO chamber allows the use of both 5.56 NATO and .223 Rem. ammunition. The barrel and 1/2"-28 Ruger® flash suppressor have a matte black oxide finish to reduce glare and provide corrosion resistance.

Ergonomic pistol grip features an extended trigger reach for more precise trigger control.

Made from aerospace-grade 7075-T6 aluminum forging, the flat top upper receiver features a forward assist, dust cover and brass deflector.

Also includes: one, 30-round Magpul® PMAG® magazine.