Ruger's ar-556 mpr rifle has a rifle-length gas system which provides smoother operation and reduces felt recoil.The matte black oxide chrome-plated bolt carrier inside diameter and chrome-plated gas key inside diameter provides exceptional resistance to hot gases.Its lower receiver is fitted with magpul moe grip and a ruger elite 452 two-stage ar-trigger which offers a smooth, crisp, 4.5 pound trigger pull.The flattop upper receiver is made from forged aerospace-grade 7075-t6 aluminum, and includes a forward assist, dust cover and brass deflector.Its handguard is free-floating for accuracy and features magpul m-lok attachment slots along the 3, 6 and 9 positions.The threaded, cold hammer-forged, 4140 chrome-moly steel barrel with ultra-precise rifling provides exceptional accuracy, longevity and easy cleaning.The barrel also provides m4 feed ramps which improves operational reliability, while the matte black nitride finish provides corrosion resistance.The ar-556 mpr has a magpul moe sl collapsible buttstock on the mil-spec buffer tube.

Metal Finish: Black Hardcoat Anodized/Black Nitride
Action: Semi-Auto
Caliber: 450 Bushmaster
Barrel Length: 18.63"
Capacity: 5+1
Trigger: Two-Stage
Oal: 35.60"-38.90"
Weight: 7.40 lbs
Stock Description: Adjustable Magpul MOE SL
Muzzle: Muzzle Brake
Receiver Material: 7075-T6 Aluminum
Sights: None, Optic Ready
Barrel Description: Heavy
Twist: 1:16"
Barrel Length Range: 18" to 18.99"
Weight Range: 7 lbs to 7.99 lbs
Hand: Right
Stock Finish Group: Black
Metal Finish Group: Blued/Black