The Ruger AR-556 MPR in .450 Bushmaster is a modern sporting rifle designed for optimal performance and rugged reliability. This American-made firearm features a lower receiver with a Magpul MOE grip and MOE SL collapsible buttstock mounted on a Mil-Spec buffer tube. The free-floated 15″ handguard enhances accuracy and ergonomics, while the bolt is engineered with tapered lugs for the .450 Bushmaster ammunition, made from high-strength superalloy. The Ruger Elite 452 AR-trigger offers a smooth, crisp 4.5-pound pull, combined with a full-strength hammer spring for consistent primer ignition. The rifle includes Magpul M-LOK accessory slots and a Ruger muzzle brake designed to reduce recoil and muzzle movement significantly. With a threaded, cold hammer-forged 4140 chrome-moly steel barrel, 1:16″ twist rate, and heavy barrel profile, this gun ensures exceptional accuracy and durability. The flat top upper receiver is made from aerospace-grade 7075-T6 aluminum, anodized for maximum durability, and includes a forward assist, dust cover, and brass deflector. The chrome-plated bolt carrier and gas key, along with a staked gas key, provide outstanding resistance to hot gases, ensuring reliable performance. Also included is a carbine-length gas system and one 5-round metal magazine.
- Manufacturer: Ruger
- Model: AR-556 MPR
- Caliber: 450 Bushmaster
- Barrel Length: 18.63″
- Capacity: 5Rd
- Finish: Anodized
- Grips: MOE-SL
- Accessories: 1 Magazine
- Action: Semi-automatic
- Type: AR
- Sub Category: Modern Sporting Rifles
- MPN: 08522
