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

Stenzel SAK 21 01
Stenzel SAK 21 01

The Stenzel Industries SAK-21: A Uniquely American AK

More than an American-made AK, Stenzel Industries calls the SAK-21 “a modular, purpose-built firearm, developed to meet the demands of special operations forces and professional shooters.”

Review: Browning Citori 825 Field

For hunting and sporting use, Browning’s latest Citori 825 Field shotgun is more than up to the task.

The Armed Citizen® April 27, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Growth in Youth Shooting Sports Signals Bright Future for the 2nd Amendment

Judging by the record number joining clubs and teams, mass-media’s disinformation and political rhetoric are losing their luster with today’s youth, who are making time to head to the range.

Go-Bag Essentials: 5 Key Products for Your Escape Kit

These five products will help you remain comfortable and safe should you need to bug out in a hurry due to natural or man-made disasters.

10 Things You (Probably) Didn't Know About The Smith & Wesson Model 29

Without a doubt, the Smith & Wesson Model 29 is one of the 20th century’s most shootable, collectible "superstar" revolvers. Here are a few little-known facts about the gun.

Interests



Get the best of American Rifleman delivered to your inbox.