Ruger AR-556 MPR Rifle Now in .450 Bushmaster

by
posted on September 26, 2018
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
ruger_556_8522-1.jpg

Ruger has announced the new AR-556 Multi-Purpose Rifle (MPR) chambered in .450 Bushmaster, offering an ideal hunting platform for midwestern whitetail deer, sizeable pigs, and target shooting at heavy steel.



The MPR platform’s superior accuracy, versatility and shootability can be attributed to many features, including a Ruger muzzle brake, Elite 452 two-stage trigger, free-float handguard with Magpul M-LOK accessory attachment slots and Magpul furniture.

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.

The rifle ships with a 5-round metal box magazine.


For more information on the AR-556 MPR or to learn more about the extensive line of award-winning Ruger firearms, visit Ruger.com  To find accessories for the AR-556 MPR and other Ruger firearms, visit ShopRuger.com or your local independent retailer of Ruger firearms.

Additional Reading:
The Keefe Report: Ruger's Multi-Purpose Rifle   

Latest

Supreme Court 2022 F
Supreme Court 2022 F

The U.S. Supreme Court’s Wolford v. Lopez Decision is Striking

In Wolford v. Lopez, the Supreme Court ruled that “Hawaii’s law prohibiting licensed concealed-carry permit holders from carrying handguns on private property open to the public without the property owner’s express authorization violates the Second and Fourteenth Amendments.”

The Fighting Shotgun: Myths, Legends & Facts

For a host of reasons, the Winchester Model 1897 "trench gun" probably never really made it into combat on the Western Front. But, the fact remains that Americans have always revered the shotgun as the ultimate fight-stopper.

Leupold Celebrates USA 250th With Limited-Edition "Mark 250" Riflescope Package

Leupold has commissioned a Limited-Edition Mark 250 Riflescope Package to commemorate the United States semiquincentennial, and it is now available exclusively through Scheels.

A Successful Friends of the NRA Dinner at Compton Hunting & Fishing Club

On Saturday, June 20, 2026, the Compton Hunting & Fishing Club in Southern California hosted another outstanding Friends of the NRA dinner.

President Trump Touts the NRA and National Concealed Carry Reciprocity

At the Mack Trucks facility in Macungie, Pa., President Donald Trump reiterated his support for the National Rifle Association as well as his support for national right-to-carry legislation.

Rifleman Review: Savage Arms Revel Classic

Offered as an affordable, rimfire, takedown design, the Savage Arms Revel line of lever-actions has expanded to include several popular chamberings, as well as a deluxe version.

Interests



Get the best of American Rifleman delivered to your inbox.