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Ruger AR-556 MPR Semi-Automatic Centerfire Rifle



Product Information

Cartridge 450 Bushmaster
Capacity 5 Round
Weight 7.4 Pound
Overall Length 36.5 Inches
Barrel Length 18.63 Inches
Twist 1:16
Threads 11/16″-24
Hand Right
Youth No
Action Type Semi-Automatic
Stock Type Pistol Grip
Stock Material Synthetic
Stock Color Black
Trigger Type Two Stage
Safety Selector
Threaded Muzzle Yes
Barrel Finish Matte
Frame Material Aluminum
Muzzle Device Muzzle Brake
Scope Included No
Frame Finish Black
Magazine Style Detachable
Length of Pull 11.1 Inches
Fluting No
Country of Origin United States of America
Accessories B5 Furniture
Trigger Pull 4.5 Pound
Included Mounts Yes

Delivery Information

Must Ship to FFL Dealer Yes
Shipping Weight 10.000 Pounds

The Ruger AR-556 MPR rifle is a gas impingement driven, box magazine fed, autoloading rifle. The mechanism utilizes the gas from the firing of the round to drive the bolt carrier rearward and rotate a bolt that locks into the barrel. The AR-556 rifle can be field stripped without the use of tools and breaks down into basic subassemblies. The safety, located above the trigger on the left side of the lower receiver, blocks the trigger and permits the bolt carrier to be cycled with the safety in the on or “SAFE” position. A bolt catch mechanism is provided for convenience in holding the bolt open for loading and inspection. The firing pin is retracted mechanically as the bolt starts to unlock and the rifle will fire only when the bolt is locked.


The Ruger AR556 MPR features a handguard that is free-floated for accuracy and the slim, 15″ length provides enhanced ergonomics. Magpul M-LOK accessory attachment slots along the 3:00, 6:00 and 9:00 positions of the handguard, along with additional slots on the angled faces near the muzzle allow any combination of accessories to be attached to the rifle. 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. The Ruger muzzle brake is a radial port design that significantly reduces felt recoil and muzzle movement. The threaded barrel allows for standard muzzle accessories to be installed.


  • Rifle-length gas system for smoother operation and reduced felt recoil
  • Free floating handguard
  • Crisp trigger pull


Made In United States of America

WARNING: Cancer and Reproductive Harm –


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