For 2019, Ruger has introduced a new model of its popular AR-556 MPR chambered for the straight-walled .450 Bushmaster cartridge. The bolt is machined from high-strength superalloy, which Ruger says is more than 50 percent stronger than traditional MSR bolt materials, and engineered with tapered lugs to support the large case head of .450 Bushmaster ammo. Additional features include a 18.63-inch cold hammer-forged 4140 chrome-moly steel barrel with ultra-precise 5R rifling and a black nitrided finish provides exceptional accuracy, longevity and easy cleaning. The lower receiver is fitted with a Magpul MOE grip and MOE SL collapsible buttstock on the Mil-Spec buffer tube. Ruger's 15-inch free-float handguard is designed to be light, stiff and versatile, and Magpul M-LOK accessory attachment slots sit at the 3:00, 6:00 and 9:00 positions. MSRP: $1,099; ruger.com.
Video: Ruger AR-556 MPR in .450 Bushmaster
More like this from around the NRA
Latest
Ammo Analysis: So You Like 'em Heavy?
Phil Massaro discusses what might make someone opt for a heavy-for-caliber choice when taking on game.
New for 2026: Steiner eDiscovery 10x42 Binoculars with Integrated Camera
Steiner Optics has introduced the eDiscovery 10x42 binoculars, combining clarity and durability with a fully integrated 4K camera.
First Case of CWD Documented on the National Elk Refuge
The Wyoming Game and Fish Department (WGFD) and the U.S. Fish and Wildlife Service (FWS) announced on May 11 that for the first time chronic wasting disease (CWD) has been documented in Wyoming Elk Hunt Area 77, located on FWS-managed National Elk Refuge.
Range Review: Rock Island Armory PK-12 Pak-Out
This 18.5-inch barrel pump action from Rock Island armory folds in half for easier storage and transport. Check out B. Gil Horman's review of the PK-12 Pak-Out here.
New for 2026: Alps OutdoorZ DU Legacy Waterfowl Bag
For those seeking a classy field bag, the Alps OutdoorZ Ducks Unlimited Legacy Waterfowler’s Bag should be on their radar.
NRA Files Lawsuits Challenging Virginia's Assault Weapons and Magazine Bans
The National Rifle Association (NRA) has announced the filing of lawsuits in both Virginia state court and federal court challenging the so-called "assault weapons" ban and magazine ban signed into law by Governor Abigail Spanberger.
Interests
Berger Announces New 300 PRC Hunting Ammunition | An Official Journal Of The NRA
- Spin Difference: The Impact of Barrel Twist Rates on Terminal Performance | An Official Journal Of The NRA
- New: Zeiss Conquest Apia 20-50x 65 mm Compact Angled Spotting Scope | An NRA Shooting Sports Journal
- Swarovski Announces Next Generation CL Companion Binoculars | An NRA Shooting Sports Journal
IN THE SPOTLIGHT
EXPLORE MORE NRA PUBLICATIONS
