Ruger AR-556 MPR 450 Bushmaster Semi-Automatic Multi-Purpose Rifle

  • Item Number: 8522
  • /
  • View More Items by Ruger
  • /
  • Condition: NEW
Ruger AR-556 MPR 450 Bushmaster Semi-Automatic Multi-Purpose Rifle
$1,019.99 $1,309.00

In Stock with FREE shipping
  • ANDERSON MANUFACTURING AM-15-STRIPPED LOWER RECEIVER MULTI CAL CLAM PACKAGED

    Anderson Manufacturing AM-15 223/5.56 Stripped Lower Receiver (In Clam Package)
    $82.00 $36.99

  • ANDERSON MANUFACTURING COMPLETE OPEN TRIGGER LOWER 5.56MM

    Anderson Manufacturing Complete Open Trigger Assembled AR-15 Lower Receiver (Multi Cal)
    $181.00 $129.99

  • COLT CARBINE 5.56X45MM RIFLE WITH A2 GRIP

    Colt M4 Carbine 5.56x45 NATO CR6920 Series with Magpul Furniture
    $1,199.00 $1,029.00

  • RUGER AR-556 MPR 350 LEGEND

    Ruger AR-556 MPR 350 Legend Semi-Automatic Multi-Purpose Rifle
    $1,309.00 $979.99

  • RADICAL FIREARMS RF-15 SOCOM 5.56NATOAR-15 RIFLE WITH 15-INCH RPR FREE-FLOAT RAIL

    Radical Firearms RF-15 Socom 5.56 NATO AR-15 Rifle with 15-Inch RPR Free-Float Rail
    $685.00 $389.99

  • DANIEL DEFENSE DDM4 M4A1 5.56 NATO 14.5 IN BBL FDE FLASHIDER PERMANENTLY ATTACHED

    Daniel Defense M4A1 5.56 NATO AR-15 with MilSpec + Finish

  • DANIEL DEFENSE DDM4 V7P 300 BLACKOUT PISTOL WITH PSB

    Daniel Defense DDM4 V7P 300 Blackout Semi-Automatic Pistol with Stabilizing Brace

  • DANIEL DEFENSE DDM4 V7 RATTLECAN 5.56MM NATO

    Daniel Defense DDM4 V7 Rattlecan 5.56mm NATO Semi-Auto Rifle

  • COLT M4 5.56 NATO MID LENGTH CARBINE WITH ADJUSTABLE BLACK SYNTHETIC STOCK

    Colt M4 5.56 NATO Mid Length Carbine with Adjustable Black Synthetic Stock
    $1,019.00

  • RADICAL FIREARMS RADICAL 5.56MM 16` BARREL WITH 15` FREE FLOAT RAIL ODG

    Radical Firearms FR16 5.56 NATO Rifle with M-LOK Handguard and OD Green Stock
    $399.99

  • ANDERSON MANUFACTURING AM-15 223 WYLDE BATTLE WORN AMERICAN FLAG

    Anderson Manufacturing AM-15 223/5.56mm AR15 with Battle Worn American Flag Cerakote Finish
    $1,147.00 $969.99

  • RADICAL FIREARMS RF-15 SOCOM 5.56MM NATO AR-15 STYLE RIFLE

    Radical Firearms AR-15 SOCOM 5.56 NATO Rifle with MFT Furniture
    $685.00 $399.99

  • Hornady 450 Bushmaster 395 GR Sub-X Subsonic 20/Box

    Hornady 450 Bushmaster 395 GR Sub-X Subsonic 20/Box
    $29.99
    ($1.50 / round)

  • Federal 450 Bushmaster 300 gr Jacketed Hollow Point Non-Typical 20/Box

    Federal 450 Bushmaster 300 gr Jacketed Hollow Point Non-Typical 20/Box
    $51.99 $37.99
    ($1.90 / round)

  • Federal 450 Bushmaster 300 gr Jacketed Hollow Point Power-Shok 20/Box

    Federal 450 Bushmaster 300 gr Jacketed Hollow Point Power-Shok 20/Box
    $64.99 $37.99
    ($1.90 / round)

  • HEXMAG AR-15 556 30 RD MAG (FDE)

    Hexmag 5.56/223 30 Round FDE Magazine Series 2
    $14.99 $6.99

  • MAGPUL PMAG 30 GEN M2 AR-15 556 NATO 30 RD MAG

    Magpul PMAG GEN M2 5.56mm 30-Round Black Magazine
    $12.95 $9.99

  • AMEND2 MOD 2 AR-15 556 30 RD FDE MAG

    Amend2 AR15/M4 Mod.2 5.56mm/223 Rem. 30-Round Magazine (Flat Dark Earth/FDE)
    $14.99 $8.99

  • MAGPUL TMAG 30RND 223RE/5.56 NATO COMPATIBLE W/AR15/ OLIVE DRAB TRANSLUCENT

    Magpul TMAG 30 AR/M4 Gen M3 223/5.56mm 30-Round Translucent OD Magazine
    $23.95 $21.99

  • AMEND2 MOD 2 AR-15 5.56 MM 30 RD BLACK MAG

    Amend2 AR15/M4 Mod.2 5.56mm/223 Rem. 30-Round Magazine (Black)
    $14.99

  • MAGPUL PMAG 30 GEN M3 AR-15 556 NATO 30 RD MAG

    Magpul PMAG GEN M3 5.56mm 30-Round Black Magazine
    $16.99

  • MAGPUL PMAG 30 GEN M3 AR-15 556 NATO 30 RD WINDOW MAG

    Magpul PMAG GEN M3 5.56mm 30-Round Black Magazine with Window
    $17.99

  • MAGPUL PMAG 30 GEN M2 AR-15 556 NATO 30 RD WINDOW MAG

    Magpul PMAG GEN M2 5.56mm 30-Round Magazine with Window
    $15.99

  • MAGPUL PMAG 40 GEN M3 AR-15 556 NATO 40 RD MAG

    Magpul PMAG 40 AR/M4 GEN M3 5.56mm 40-Round Magazine
    $21.99

  • MAGPUL PMAG 30 GEN M3 AR-15 556 NATO 30 RD WINDOW MAG (TAN)

    Magpul PMAG GEN M3 5.56mm 30-Round Coyote Tan AR/M4 Magazine with Window
    $17.99

  • MAGPUL PMAG 20 GEN M3 AR-15 556 NATO 20 RD MAG

    Magpul PMAG GEN M3 5.56mm 20-Round Black Magazine
    $13.99

  • MAGPUL PMAG 10 GEN M3 AR-15 556 NATO 10 RD MAG

    Magpul PMAG GEN M3 5.56mm 10-Round AR-15 Magazine
    $14.99

Product Description

What's in the Box

  • Ruger AR-556 MPR 450 Bushmaster Multi-Purpose Rifle
  • (1) Magazine
  • Cable Lock
  • Owner's Manual

Introducing the new Ruger AR-556® Multi-Purpose Rifle ("MPR") chambered in .450 Bushmaster. This new offering is ideal for hunting Midwestern whitetail deer and big pigs and target shooting at heavy steel.

The MPR platform offers superior accuracy, versatility and shootability by incorporating a Ruger® muzzle brake, Elite 452™ two-stage trigger, free-float handguard with Magpul® M-LOK® accessory attachment slots and Magpul furniture. This new rifle combines innovative engineering, modern materials and precision CNC-machining to make a superior rugged, reliable, semi-auto rifle chambered for the .450 Bushmaster cartridge.

Accuracy and velocity are maximized with a nitrided, 18-5/8" cold hammer-forged barrel and the 11/16"-24 radial port muzzle brake to soften recoil. A carbine-length gas system with 0.875" gas block ensures reliable function and fits under the 15" free-float handguard. The Magpul M-LOK accessory attachment slots around the handguard make attaching a sling and bipod easy. The handguard's smooth profile situates easily on shooting sticks or a backpack for a steady shot.

Engineered with a high-strength superalloy bolt and tapered lug geometry, the .450 Bushmaster MPR is built to withstand the strength of a cartridge that delivers twice the energy of 5.56 NATO. The upper receiver features a large window for easy ejection and is covered by a standard dust cover. Mil-Spec forgings are CNC-machined, anodized and finished with Ruger's Elite 452 two-stage trigger, Magpul MOE grip and MOE SL® stock.

Firearm Features

  • 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.
  • Flattop upper receiver includes an enlarged window for easy ejection as well as forward assist, dust cover and brass deflector. CNC-machined from Mil-Spec forging and Type III hard coat anodized for maximum durability.
  • Bolt is machined from high-strength superalloy, more than 50% stronger than traditional MSR bolt materials, and engineered with tapered lugs to support the large case head of .450 Bushmaster ammunition.
  • 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.
  • Carbine-length gas system provides the most reliable function with .450 Bushmaster ammunition.
  • 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 5R rifling and black nitrided finish provides exceptional accuracy, longevity and easy cleaning. The 1:16" twist rate maximizes accuracy with bullets ranging from 170 to 260 grains.
  • 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.
  • Ruger® muzzle brake is a radial port design that significantly reduces felt recoil and muzzle movement. The 11/16"-24 threaded barrel allows for standard muzzle accessories to be installed.
  • Also includes: One, 5-round metal box magazine.

Firearm Specifications

  • Model Number: 8522
  • Caliber: 450 Bushmaster
  • Stock: Black Synthetic Collapsible
  • Handguard: Free-Float M-LOK®
  • Sights: None
  • Barrel Length: 18.63"
  • Thread Pattern: 11/16"-24
  • Twist: 1:16" RH
  • Capacity: 5
  • Finish: Type III Hard Coat Anodized
  • Height: 7.30"
  • Weight: 7.4 lb.
  • Overall Length: 35.60" - 38.90"
  • Length of Pull: 11.10" - 14.40"
  • Grooves: 5

Customer Comments & Questions

Customer Reviews

(5 out of 5) BIG PUNCH
by Drew from West Olive, MI on July 24, 2020

This gun is amazing. Bought this so I could blast a deer south of The line. Accurate AF and has a little kick. LOL

(5 out of 5) Gun addiction.
by Jian from Omaha, NE on August 19, 2020

Really great service and quality .

(5 out of 5) Really does the job
by Bill from McMurray, PA on August 3, 2024

After a few initial issues that Ruger quickly corrected, this rifle has performed flawlessly and effectively. My son shot a 500-pound-plus hog from approximately 60 yards, hitting it in the face. Needless to say, it never knew what hit it.