Ruger AR-556 MPR | .350 Legend | 16.38in | 5rd | 8532

The Ruger AR-556 MPR in .350 Legend is a purpose-built modern sporting rifle that combines an AR platform layout with caliber-specific design for states and applications that favor straight-walled cartridges. It ships with a 15″ free-float Magpul M-LOK handguard, Magpul MOE SL collapsible stock and one 5‑round magazine. For a reliable optic under $1,000 to pair with this rifle, consider a 1-6x variable such as the Vortex Strike Eagle 1-6×24 for close-to-mid range versatility and fast target acquisition.

Applications: medium-range hunting of appropriate game where straight-walled cartridges are allowed, and precision sight-in and range practice.

Product Specifications

• The model is AR-556 MPR (MFG# 8532).
• The caliber is .350 Legend.
• The action is Semi-Automatic.
• The barrel measures 16.38 inches.
• The rifling twist is 1:16″ right-hand.
• The capacity is 5 rounds.
• The rifle includes one 5‑round magazine.
• The handguard is a 15 inch free-float Magpul M-LOK.
• The stock is a Magpul MOE SL six-position telescoping.
• The trigger is a Ruger Elite 452 two-stage with a 4.5 lb pull.
• The finish is Type III hard coat anodized black with a matte black nitride barrel.
• The muzzle features a Ruger radial port muzzle brake and a 1/2″-28 x 0.4″ thread pattern.
• The overall length is 33.38–36.63 inches (length of pull 11.10″–14.40″).
• The weight is 6.6 lb.
• The UPC is 736676085323.

This AR-556 MPR is built around a forged 7075-T6 upper with a forward assist, dust cover and brass deflector, and a cold hammer-forged 4140 chrome-moly barrel with optimized feed ramps and a nitrided finish for corrosion resistance. The pistol-length gas system, mil-spec 9310 bolt, and chrome-plated bolt carrier/gas key are specified to deliver consistent operation and service life. Its configuration—compact barrel, free-float M-LOK handguard and collapsible stock—makes it a practical choice for hunters and range shooters seeking a versatile, caliber-specific MSR package.

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