This Assurance C model comes chambered in 5.56 with a 16″, CMV barrel (carbine length gas system). Picatinny rail gas block comes perfect height for sights and is attached to a RRA CAR lightweight quad-rail.
Rock River Arms AR1900 LAR-15M Assurance-C Carbine 5.56x45mm NATO 16″
Rock River Arms AR1900 LAR-15M Assurance-C Carbine 5.56x45mm NATO 16″ 30+1, Black, RRA Operator Stock & Hogue Grip, Carrying Case
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