Ruger AR-556 MPR Rifle Now in .450 Bushmaster

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posted on September 26, 2018
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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   

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