Rock River Arms Light Mountain Rifle 5.56 16″

The Rock River Arms Light Mountain Rifle is a lightweight modern sporting rifle chambered for .223 Remington/5.56 NATO with a 16-inch barrel and a synthetic black stock. It is configured with a six-position car-style stock, an oversized winter trigger guard, and includes one magazine and an RRA hard case. For optics under $1000 a variable 1-6x combat/tactical scope such as the Vortex Strike Eagle 1-6×24 or the Primary Arms SLx 1-6×24 pairs well with this rifle for close-to-mid-range work.

Designed for reduced carry weight and field use, this rifle suits mountain and backcountry carrying as well as general field target or varmint work.

Product Specifications

• The caliber is .223 Remington/5.56 NATO.
• The action is Semi-Auto.
• The barrel length is 16 inches.
• The overall length is 32.5 inches.
• The weight is 6.2 pounds.
• The magazine capacity is 20 rounds.
• The magazine is detachable.
• The stock material is synthetic.
• The stock color is black.
• The rate of twist is 1:9″.
• The sights are none.
• The metal finish/color is black (colored finish).
• Other features include a lightweight aluminum mountain rifle handguard and a chrome moly lightweight barrel.
• This item includes one magazine and an RRA hard case.
• The UPC is 842834110117.

The Light Mountain Rifle emphasizes reduced carry weight without sacrificing practical utility. Its configuration—synthetic stock, lightweight barrel, and oversize trigger guard—makes it well suited to extended carries and variable weather conditions while remaining versatile for range use and field shooting. The included magazine and hard case add value for transport and storage, and the rifle’s modern sporting platform accepts a wide range of common AR-style accessories and optics.

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