Rock River Arms 5.56 NATO 16" 31-Round Stainless Carbine

The Rock River Arms AR1915 LAR-15M Assurance-UTE Carbine in .223 Remington/5.56 NATO is a mid-length carbine platform purpose-built for duty, training, and tactical applications. Chambered in the proven 5.56 NATO standard and configured with a 16-inch stainless steel barrel, this rifle delivers reliable performance across law enforcement training cycles, defensive scenarios, and precision range work. The Assurance-UTE variant combines Rock River Arms' established platform reliability with field-proven ergonomics and modularity.

The 16-inch CMV lightweight barrel with carbine-length gas system balances velocity and handling characteristics critical for close-quarters and intermediate-distance engagements. The stainless steel construction provides superior corrosion resistance compared to standard chrome-moly barrels, extending barrel life in humid environments and reducing maintenance intervals. The rifle ships with an RRA lightweight quad-rail, A2 flash hider, RRA 6-Position Operator stock for flexible length-of-pull adjustment, Hogue grip for consistent hand placement, and fixed A2 front and rear sights. A 30-round magazine, hard-sided carrying case, manual, and warranty documentation are included.

This carbine addresses operators, law enforcement trainers, and serious rifle shooters requiring a combat-proven platform with manageable recoil, accurate sighting capability, and rail-mounted accessory flexibility. The 5.56 NATO round offers lower recoil than larger rifle calibers while maintaining effective range out to 300+ yards with proper ammunition selection. The included quad-rail system accommodates red-dot optics, magnified scopes, lights, and other modern accessories without gunsmith intervention, making the AR1915 LAR-15M adaptable to evolving mission requirements.

At 16.05 pounds unloaded, the carbine weight allows extended periods of handling and shouldering during duty cycles or training. The fixed A2 front sight and flat-top receiver with rear sight carrier provide a proven aiming platform; the rail system and A2 configuration remain the standard reference for AR-platform rifle performance and compatibility across most modern duty environments.