Ruger AR-556 MPR 450 Bushmaster Rifle (5-Round)

Ruger AR-556 MPR headlines the specification sheet for this platform. Factory literature categorizes it as a modern sporting rifle, which frames expectations for handling and use. Factory chambered in .450 Bushmaster, built around a semi-auto action with a 5+1-Round round capacity to keep performance predictable from shot to shot. Dimensional notes call out a barrel length of 18.6'' / 18.63'' / 18.63" in and overall length measuring 35.60"- 38.90" in, helping you plan cases and storage. Unloaded weight settles near 7.4 lbs / 7.40 lbs, which influences recoil management and carry options. Twist rate is listed at 1-16, offering guidance on which projectile weights stabilize best. Furniture is trimmed in american walnut / polymer / synthetic with a black finish, giving the rifle its classic profile. Metalwork wears a black hardcoat anodized/black nitride / colored treatment, pairing durability with period-correct styling. Stock appointments include smooth furniture without checkering and a traditional butt plate. Overall dimensions ship at 3.30 X 10.90 X 43.00, so plan case and safe clearance accordingly. Magazine system uses a detachable design, making reloads faster between strings. Without a hinged floorplate you will cycle rounds out manually when clearing the rifle.